Heres some custom stuff
Buddy from work made this spacer to use a neon manual trans OBX diff in the auto trans
Exhaust manifold I made. Stock 2.4 caravan na manifold cut and flanges/transmission added
Gutted rear doors. Took out the window glass and roll down gears and replaced w/ painted lexan
Cut out the spare tire well and welded in a flat piece. Also added a rear frame brace in place of the rusty flimsy piece that was there.
Spacer to fit the large 5.0L Mustang oil filter instead of the small stock SRT4 filter.

Rear of the car is gutted for weight reduction and so no one tries to ride in the back(I left the rear door handles inoperable also). 1 Gallon tank w/ methanol for cooling intake charge and octane for more than 15psi on 93octane pump gas.
Adjustible rear ride height:I wanted to be able to have stiffer springs and adjustable ride heights to see what worked best for launching. So I cut the stock top spring perches off, and added some adjustable perches. I welded them on and since they are 6" wide and the frame is only 2-3" I added some steel bracing on each side. This way I can use a common 5" dia spring and even swap springs with ease if I want. So I now have ~3" of height adjustment in the rear, to macth my front adjustable coilovers.