I did a few changes during the past few months. I finally got some sidepipes on it. 2 1/2 in w/dual glasspacks, didn't turn out too bad for my first custom exhaust. Sounds nice and loud, love the howl when I hit the gas and the crackle when I let off.I also got synthetic oil and a k&n air filter. Exhaust and filter should up hp 10-15/ea., so I'm estimating about 170-180. Still need more... maybe some headers and cats, sometime. insulation came off halfway off the hood and started falling all over the engine, so out that goes. Not going to bother replacing it. won't cause any damage, i hope.