Groomie,
I can not say I have had great success with the u-pro oil gear diff. I would be stocking some spares if I was you. Not being negative, but used it in TC and then modified one for a mini, did not last long before stripping the internals.
RC Addict is very high grip, so there will be alot of strain on the oil gear diff.
I also forgot to add you can change rear roll centres, trackwdith etc to get more rear grip. You also have to change the way you drive when running a FWD car, certainly not the same as a TC.
Calvin.
Last edited by caltek1; 12-18-2011 at 06:52 PM.