I know that its possible to put a 360cid into a CJ but I have a built 390cid and a C4 and was wondering if it would fit... Or option 2: put the drive train of an older XJ with an auto (for the GF) in to the CJ... By the way it already has a 258 but the bottom end need rebuilt and the trans has no first gear ... Also Im looking for a web forum that has just CJ7s or such like this forum....