It's not a direct bolt-in (you'll have to cut & reweld the rear perches, up front you'll have to outboard your springs and cut & turn the knuckles to set proper caster). For all of that effort, you're not going to buy yourself much if any advantage in the rear...just weld & truss your AMC 20. The 30 will be right about at it's limits, but should hold up if you upgrade the shafts (Warn, Yukon, AlloyUSA, etc) & u-joints, replace the hub bolts with studs, and replace the the stock lockouts with better quality aftermarket ones (Superwinch, Warn, Milemarker).
'86 CJ-7 Laredo: 4.2,T-999,D300,D30/D44,'94 YJ tub, full cage, Shrockworks rockers, OYR corners, AC,cruise,restored seats,3 tops,2.5" Superlift,F-T shackle reversal, RS9000x's,35" Dunlop Mud Rovers.
'83 Scrambler: time & money pit under construction with parts from CJ's,YJ's,TJ's,FSJ's,GM,Ford,IH,Honda,Toyota and a whole lotta aftermarket & custom stuff.
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