I am using this page to give 5.0 owners ideas and suggestions. Stuff I found out online or on my own. The hard way. This is in hopes to make someones project go alittle easier. First off, run to Boarders and get "How to Tune a 5.0" Its the place to start. Read it, the whole thing; because, there is more after market parts for 87-93 mustang than anyother american car, or any car for that matter. This is a car that can be 1000 hp or 225.(or 88 in a 4I) So you need to know where to start, and what you should shoot for on your budget. Also this book features all the models; so you know what you should steer clear of and why. Also you will learn what you have. Although that does not help if you bought the book after you got the car. I mean why else would you buy the book??? Seeing as you already own one, just keep in mind that stock the 5sp is better for performance then a C4 auto. But everyone knows that you should shoot for a 87-93. They just don't know why usually. Well this book will tell you that, and your realistic goals of horsepower. I wish they had a book like this for Camaro/Firebird/Vette or any performance car. It really gave me ideas, and an idea of what to expect from the car. I can't say enough about it, I just wish they had a few more pages on body and interior accessories. As for the drive train, braking, and suspention its perfect. Next, since these are so popular there are a lot of used or never installed parts on craigslist. Look for superchargers, cold air(since that can't go bad), heads, wheels, and body parts. Remember shipping on body parts,wheels, and superchargers is expensive and costly to ship. So look for them, if decide not use them you can always resell. Because 150 in shipping is more then some of the parts! As for superchargers make sure you're getting a good deal, and know what your missing or have. As for suspention and parts that go bad over time I would becareful. Always judge the buyer, and pick they're brain. You have to know they know what they have and so do you. You don't want to find out what ever it is isn't for your car(ie make model YEAR). And as for a blower this is a big saving point. I got a $6000 set up for 1550. I highly recomend this... Most important! If you are fuel injected 86-88 you need a mass air flow sensor and computer. Any upgrades with speed density and you will see how much you free air you gained on your idle. Its not controlled, making undrivable. So you will need to switch to mass air or go carb. But carb is limited. A carb 302 will only get to 300 legal hp(thats in how to tune a 5.0). A injected will get up and over 500 naturally. So keep in mind that you want to stay injected. Its simpler and makes greater, more reliable power. Common sense to me; however, there are still a ton of carbed 86-88s because its cheaper. The price of a performance carb set up is nealy the ammount of the mass air conversion. Like I said though, you get what you pay for. Brothers Performance supplies a great set up for a reasonable 500 dollars with a tuned computer! We could talk about carb or injected, but that seems like a mood point. Ones much cheaper and ones much better. Now for the 86 cars, well you are limited on your stroke and heads, thats what increased performance up 20hp in 87. This will be major lag and a cap in the long run. Also the 93 stang was given a down grade in power from more restrictive internals, and will really limit your potental. Keep that in mind. If you get a deal on a 302-306 performance motor for sale consider it if you have either of these years. Think about it, buying one of these on craigslist is about the same as fixing the motor for more power. Eventually, we will all need a new motor anyway. The best thing you can do for any fox is upgrade breaking and tires. Slotted fronts will make a great improvment, and the rear drums are bad but 80% of all breaking is done by the front. So... With just slotted fronts you will be able to stop in 125-130 feet on good tires. Compared to the gastly 160 feet it used to be. With tires, well no matter what kind of power you make. It won't matter if you can't plant the tires. These two go hand in hand. Whats good about power if you cant stop! The second best thing you can invest in is the suspention. Sure the engine makes things fun, but the 5.0 handles like a dog. This is where Ford just decided it didn't need to spend money and save the owner some. So upgraded shocks will hold down the rear, and good struts(don't be cheap here) and springs(make alittle lower, it helps the geometery) will make the car really handle. Lower the car, they all sit to high. Hense some of the oversteer of these cars.The 5.0 is a white knuckle driver and your job will be making it a bit more stable. The kits work, but you can mix and match a good system. Just remember you get what you pay for here. I found Summit is good for springs and control arms, but shocks and struts don't be cheap.