I've been wanting to convert my t4.1 to an sc10 too, my local track doesn't run a 2wd truck class anymore, just an sc10 class. one of the other guys I race with converted his t4 and it cost him about $75. it'd be nice if AE made a kit that contained all the parts to do so. might be cheaper to just buy a $100 roller and just swap out the electronics from the t4.