Which engine mounts?
 

OK, so I've searched and I read Doppelgänger's WTF thread but it still seems inconclusive.

Did we ever definitively ID Mazda Comp vs. Mazdaspeed mounts? Part numbers?

What's the diff? 40% vs 30% stiffer than stock?

Is either more durable than the other in a turbo application? Less resistant to heat? Less resistant to tearing?

Which vendors sell what? I want to put in new ones before I mount my manifold. I'm ready to buy but don't know what to get. Is there anyway to improve the longevity? Can they be effectively shielded from turbo heat?


Thanks for any insight!

Yes, I updated that thread with difinitive details about all three mounts...including pictures :)
With that said, I'd recommend the MS mounts considering they're easily available, a little less cheeze than the MCs and the difference in stiffness is less than 10%.

Excellent. Thank you for your research, opinion and follow-up! I'll probably follow your lead on the N076-39-040.