The SX4 body is a 251 wheel base will not fit a ta02, as most chassis are 257mm but will fit the tb04r you have moves the suspension spacers all to the back, then also adjust the shock mount spacers, make sure you shim the gear boxes as it has to be done so you don,t grind up the gears, I just sold my 04r that had every hopup possible, it was an awesome car to build. enjoy