Slipperential Worth The Money For Racing?

[luvsrc]

thanks for the reply guys, i might have another competitor who is buliding his revo gorillamaxx,given the same good driver will i be able to beat the revo along with ofna truggies that i will compete with?is getting a faster servo with high torque (i have tha hitec 5645 .20 sec& 130+ torque,can't remember exact figures) also helps? and what about spektrum vs FM radios( I'm using FM airtronics MX3 at this time) is upgrading with radio also helps with faster response on the truck?