Rosin on a belt may help grip, but when it gets too hot it will try and ball up. In my experience- for a belt to dry out and crumble there's far too much heat around the belt or when a belt has a lot of whip it get's dried out very fast. A belt that slip's alot get's glazed on the tapers. The idea that a salisbury clutch is going to provide better performance on a near stock engine is a stretch! Though tuneable- you may get slightly better ratio due to the size/diameter, but as far as shifting and response there won't be much difference.I think you'll spend a bunch of money for little performance difference- but it's your money!!
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