Im in the middle of restoring my 87 MJ and currently trying to decide if i want to stroke the 4.0 while its out or just rebuild it back stock. Im very much leaning to a 5.0 if i do, or potentially a 4.7, only being driven on weekends and or to car shows, my main question is, how does the renix system do with 5.0s, let alone 4.7s? I've found very little information on them, and the ones I've read have been 50/50 that they work great or a major pain to tune.
Any advice?