I ran the OME HD/LJ setup with Acos and 3/4" spacer AND medic TT/engine skid totalling roughly 5-5.5" of lift at the driveline on my LJ rubi and ran stock arms for a few years without issues. Upgraded to the Curries and should have done it years earlier. You SHOULD be OK, but be prepared for adjustable rears if need be-both lowers and uppers to set wheelbase and pinion OK if needed.
Best of Luck,
Mike
Best of Luck,
Mike