I've got a '95 YJ Chevy 350, SM465 & Dana 300 w/SOA, RE 1.5" Rev Eyelet springs & 1.25" shackles
. I'm running Dana 44's front(welded) & rear(Aussie locker). I got 39.5" Boggers. Only problem I had was knobs on Boggers would rub leaf springs at full turn & rub my custom frame slider/step. I fixed the leaf spring rub by adding 1" wheel spacers up front & while I was at it added 1.5" spacers in the back. To fix the rubbing on the slider I just have to remove it & cut it down some. Rubicons work fine for me, rides exceptionally well for 40" Boggers. My Toyota has 40" Boggers & doesn't ride this well & it has IFS.