Read a post that the 4.6 cam is about the same as a crower 230 I believe. Anybody done this in a 4.0? I am about ready to replace mine in "96 D1 w/165k. A 4.6 would be cheaper, would it be any easier/simpler too? I am assuming I will need new lifters and pushrods, and crank/cam chain and wheels also. So tell me why/why not.