Well I just checked the tcase mount from my old v6 tcase and it is completely different than the ones I have on my 4cyl cases. Am I missing something here? I also checked my motor mounts again and they look prertty damn good. I understand the Rockstomper Motor mounts transmit a lot more vibration. I drive some pretty good distances so I think I'll stick with the stock mounts. Guess I'll have to try some new case mounts.