I have a 72 4x4 that i am considering converting to 2wd. I noticed the the potential 2wd doner has the 5lug pattern. Did any of the first generation 2wd come with the 6lug pattern?? I also i want to maintain the original 4x4 stock height once converted to 2wd. i want keep the rear suspension intact. would i require additional modification to the 2wd once put on to maintain the 4x4 height?? thanks, ARQ.