whoops, MML's...
As for MML's all of them will transmit vibrations except for the spacer kits. JKS and Goferit (I think maybe TD Performance does also) are the only ones I know of. Some people don't mind the vibrations since they only come up when idling.
I've had the JKS and now run the TD Performance regular mounts. I'm probably going to swap them out for the JKS Budget spacers and stock mounts and give those a try. The vibrations at higher RPM's are breaking off my exhaust mounts for some reason. :shock: