Oh, and on the side, a few engines that are not as strong as their replacements? 2.5L chrysler engine replacing the 2.5AMC in the wrangler. The quad 4(olds WORST engine ever!), the wankel rotary engine in the newer RX7s, the 4.6 in the crown vics, the 1985-1989 305 (seen a lot dead, anyone care to confirm this?), the HORRIBLE 2.6L mitsubishi 4cylinder. All of the knocking dodge engines during the early 90s and late 80s, the EFI powered slant 6 in the final diplomats(can anyone figure these things out?) Feel free to add to the list, this is just a start.