Someone mentioned making a front subframe connector for the max in another thread. So I went and looked under my car today. It looks like one might help a lot. The rear mounts for the lower control arms in the front just seem to be sticking out from the chassis woth no real bracing. I would think that linking these together side to side or with the crossmember under the engine would yield some useful front end stiffness. Anyone else have any theories?

 

I <a href="http://www.eatricezone.com/miata/suspension/404475A.html">installed one on my autoX Miata</a>... it made a noticeable difference.. much stiffer and tighter chassis with less cowl shake.