It works. I made a modified concept version for my Arresti. Check out my website, on the Arresti page, there are tons of photos of how I did the whole thing. Been holding up very well, but it doesn't do much for vibration damping...not bad, but not real good, either.

The nylon lock nuts on the BACK of the firewall is essential; don't even TRY to do one of these without those....you will have an UGLY surprise!