Originally Posted by Velo Mule

Nice looking Mini Nemosengineer . I don't know how stiff those engine mounts are however, I got some Mopar performance engine mounts for my Omni (way back when) and it can turn a daily driver into a rattle box. For me that was no problem. But your car looks like a daily driver.

Another solution that some have used is to fill the holes/voids in the original engine mount rubber with Butyl rubber from a tube. It is not as stiff as the racing mounts, but better than the factory version that are meant to dampen noise, vibration and harshness. It also works to stiffen suspension bushings.