In fact, Randy the guy I dealt with at GPR, claims that his sponsor in '85 gave him the second water cooled cr500 in the country.
Anyways, long story short
I took my stock upper triple to them for some R&D.
They came up with a submount kit for STEELY 500's
If your interested, give them a call at 619.661.0101
or visit the site http://gprstabilizer.com/
these guys actually answer emails and IMO went above and beyond for 500's the world over.
Let them know what you think



"the game of life of is not so much in holding a good hand as playing a poor hand well"