If you have a local hobby shop with some shells there, take a measurement from approximate wheel opening lengths, center to center and compare. The tmaxx and revo replacements would be a good place to start for sure!
I don't know that I've ever seen such a close to trademark infringement since the multiple rips on the hornet/grasshopper and a slew of copy cats! Good for you that you found one and got such a slammin deal on it!!!
While I am not sure which one you have, I'm sure someone with a sharper eye for the tmaxx can answer, I am aware that a LOT of parts ARE different between chassis'.
That said, Welcome to RCNT!!! Good to have you aboard!!!:welcome_sign: