lol, yeah itll blow bits of drivetrain every 2 seconds with a big block unit...but still a VERY cheap buget .21 is going to have a load more power than the equivilant spent on a small block? just a little thought i was having probbably end up drilling bits outa the chass to get it in, well almost certainly, how come nobodys made a bb conversion for the rush? they do one for the rs4 evo3 or whatever the HPI tourer is...?