4th gen rears are 2" wider on both sides (4" total). They also came with better gears usually and a Torsen lsd/posi. By using a 4th gen you can run 4th gen wheels which would otherwise require 2-2.5" spacers. The 4th gens also came with disc brakes which is nice if you're into the whole negative horsepower thing
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, Jon
Owner of a Red Sled.
If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s)
\"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue
