Originally Posted by NiMo

If you can get hold of a complete WGT rear axle assembly from either Associated or CRC, you only need to put heat shrink around the Imperial bearings to make them fit the Metric Tamiya ride height units, then you can fit all Pro10 wheels.
And unlike my F109 (which is at 206mm) you would get the F103/F104 inside 200mm.
Also if you can find some rare 5mm x 8mm FLANGED bearings you can then fit Pro10 wheels to the front.