[steve s]

I'm sure John will chime in soon, but his magazine reviewed the various motor mount options a few years ago, and I'm pretty sure that they found the model that you are about to install to be distinctly the worst. The original style was best for vibration isolation. Unless you're hanging an AC compressor or somesuch on your motor and really need extra support, why not save yourself some drilling and heartbreak?

I've got a similar, earlier model made by one of the California vendors that does not use single, straight thru bolts that seems to work well. Haven't seen it for sale for some time.

Steve