Factory Soft Mounts: For a track car "soft" mounts are not the first choice but the option is there.
Factory Hard Mounts: Sounds better than the soft and they are still availiable. PN: 33331118568/33331118928 Cost: $85.00
Alpina Mounts: Sadly, like most all of the E21 Alpina goodies these mounts are NLA. (I did however find some on www.ebay.de You can find some pretty decent online translators online to translate the auctions if you do not speak German.) The factory mounts have holes in them, the Alpina mounts are solid rubber, you cannot see through them on the sides like the factory mounts. Alpina mounts are a step above the factory hard mounts. If you find the Alpina mounts BUY THEM.
Korman Solid Sub Frame Mounts: This requires you to send them your sub frame for modification. While I am not sure of the costs of the actual modification, shipping costs alone may easily be more expensive than the factory hard mounts. Would work best if you were able to send them a spare sub frame, especially if your car is a regluar driver.
