I think gokart engines share a lot in common with the ever bigger gassers that us RCers tend to run. It'll be just fine if somebody ask about a gokart engine converted to RC-use; asking where one might find Gokart chassis and such, however, is not.
Heck if anybody has converted a 1200cc Kawasaki DOHC motorcycle engine for RC, I would love to hear it. Otherwise, general questions about motorcycles would reciever much better reception at the many motorcycle related forums. Likewise for gokarts.
Okay, I'll quit now. 'Starting to sound like a moderator...