http://www.deyemeracing.com/ sold solid transmission mounts for a while. Per their website they may not sell them now as they have taken their business offline. You can contact them via e-mail and see if they still have them. I am running the Prothanes all over my car. Full suspension kit, motor mounts, etc. You will notice a difference. It used to aggrevate my roommate when he would ride with me, but he put solid acrylic mounts in his 240 and his car is much worse.

To each their own.