I’ve been building a trail rig for the past year or so but had holdups for parts and finances. It’s a jeep YJ on Hp 44/9” and 37” m16 swampers. I have searched all over but can’t find the line in which trusses are needed. I am linked up front but still on leafs in the rear. Detroit rear and spooled front, chromoly shafts are next up on my list. Any advice would be greatly appreciated.