1973 GP 292 just for racing.......what brand and # of belt and why?

[292 james]

So here is the deal I just bought a 73 gp 292 and I plan on racing it around MB in snow ovals and maby a 100 mile race they have her in Manitoba ...I want every advantage in stock class I can get so what brand of belt do you guys figure I should use and why...

Thanks