You might want to poke around earlycj5.com
The pickisn for pre-'75 CJ's are pretty slim and less than stellar from what I've seen. The best results look to come from converting to a '76-'86 CJ suspension or even better a YJ suspension, both of which involve some surgery.
'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.