ok I didn't read that anyone said this yet. By going to the 86 frame you saveing a bigg headache in not only saving time from the EFI wireing but you also have the IFS steering box on it. If you want you can hire me to make a crossmember to save money. Put the rears up front and to save money put blocks and shackles in the rear. Its really not hard to do a SAS. Engine issues can be a pain and get you frustrated very fast. My vote is just part out the 84 and just keep the axle and transfercase from it for yourself.