I have a deal brewing it is a 1999 Black on Black WJ, body and interior in great shape, even for the miles on her. owner had a head or full motor problem. had a used 125k motor installed and it was bad also ( head problem). So I am picking it up tomorrow for 1200. I found a set of heads from an 01 4.7 durango rebuilt on the way to where I am going for 325 both. will these fit and boy how sweet that would be.