I have messed around with those types of New Bright cars before. I have done a hobby grade electronics swap on the 60's Corvette and the 57' Chevy. When it comes down to it though, the New Bright chassis's are paper thin plastic and not worth it IMHO. The gear boxes strip out easy as well. The chassis is kind of similar to a Tyco Bandit, just a lot flimsier. I have even put a Bandit rear end on them before pretty easily.