I'm running the Werks clutch on a standard V-Spec in my 8B. The biggest trick was to get the flywheel spacing right for the Werks flywheel. Buy either a 6mm collet and space it .2mm (as long as your collet doesn't sink too far into the flywheel) or buy a 7mm collet and machine it down to 6.2mm. You can use the stock Losi clutch bell, and you want to use the stock Losi crank screw, washer and shims if possible since there isn't much room between the end of the crank and the fuel tank.