I think not. Tamiya pinions are a 'metric' version of 48DP (called 'module', and Tamiya pinions are 0.6 module).
Try rolling a Tamiya pinion on your X-Ray spur gear. If it is 0.6 module, it will not roll properly, it will occasionall jam. Since X-Ray spurs are 48DP, and you will need pinions very much smaller than the numbers you quoted for your Tamiya range, get 48Dp pinions and you know it is OK. HTH