I'm putting in a 408 in my 98 camaro and I want to know what you guys recommend for motor mounts. I've been told by a few that I don't want to use the stock rubbers that they will give up too much (when I road race) and that they won't live very long. The problem is that I still drive the car on the street a little bit and don't want the a terrible ride or having the vibrations of the engine transmitted through the entire car (i like to see out my rear view mirror) Will the Polyurathane (sp) motor mounts be that bad or is it a good option? Please advise. Thanks!