Ok go here
http://picasaweb.google.com/mlpmotor...F103RMUpgrade# ok I was working on this for my son I took it back out of the box and took a few pics. I am running GRP front tires with the F103 front bearings in them and spacers to keep the wheel true on the axle.
The Rear I am running GRP Tires and a CRC Genx 10 setup works the best and is centered with the Tamiya F103 rear pod it was easy I just drilled out the Tamiya height adjuster to fit the 1/10 scale Pan car axle bearings and installed them back in the pod setup in reverse so the little 1/4 moon shapes are pointing out not in like the F103.