First time really getting into this whole 4x4 world, so hopefully you guys can bear with me and point me in the right direction, I just picked up an 85' GMC full size Jimmy lifted 3 inches in the body and soon to be 3 inch suspension with a SB 400 in place of the original 305. I believe everything else is stock from tranny/tcase/diffs. My exhaust is now needing to be replaced and I'm looking to go with headers to run dual exhaust off the 400. Will any headers that fit the 400 work or is there a specific type I should be looking for (keeping in mind the jimmy never came with anything over the 350). Told you I was a newbie, but just want to make sure I wont run into clearance problems.