[JL8Jeff]

The only difference I can think of is the early LT1 cars(93-95) had the intermediate pipe go all the way up to the cat. The 95 dual cat on up had a different dual cat y pipe that connected to the intermediate pipe further down. So the early LT1 cars had the full length intermediate with the 'S' bend. I have no idea what the V6 cars look like but that's the only difference I can think of.