[dirt track date]

Hi
Can some one explain the difference between 1/10th brushless combo's and 1/8th brushless. I have been carpet racing my 1/10th buggy for a few months now but am itching to go off road but there is only a 1/8th club in my area. I want to run a 1/8 buggy with a brushless system. At the moment I am running a reedy 3300KV combo in my Associated B4, will this work in a 1/8? Has it got the torque?
I am on a tight budget can anyone recommend what's the best thing to do??

Alex