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    I am about to do some major work to my cj, new 258 block. 4.0 head, mopar mpi, loose the mechanical fan, new cf clutch. I understand all of the questions on the head bolts 1/2 vs 7/16, summit auto parts and jegs carry head bolt bushings, as far as questioning the strenght, A guy that works for me is using them in his 1,000 hp small block ford said he hasent had a problem yet, here is where I am look for some info. When useing the 4.0 head I need to change my exhaust so I am looking for a header any body done this yet ? needs to fit a 82 cj7 manual

    4" lift, 33's, solid rear axle, air lockers front and back, ramsey 9,000# winch, super winch hubs, roll bars everywhere, twin stick, music and communication all new interior, everything works fer now