Here is a link to the full range of spares and options parts for the GT24B. Option parts include LIPO batteries, different kinds motors, metal pinions, different size spurs, metal dogbones, carbon towers, shock tuning springs, aluminium shocks, clear body, wheels, tyres and more...
http://www.dms-racing.com/index.php?...&view=category
Regards 10th wheels, these won't fit this car, they are far too big. If two were placed over the axles they would be touching each other to give you an idea of the size.
Hope that helps