hey im buying a yokomo AE86 kit and was looking at your 645 servo!! ummm is it adequate for drifting? what do you recommend for throttle servo?? which controller??

The 645mg would do great for it, you can get more speed out of a digital servo though. I'd recomend the Hitec SRX radio system if you're looking to save money. If you wanna go for a more "race worthy" radio, then try the CRX.