most everyone that is racing is Stock with chassis mods, was just looking to run this 12hp with the 18hp opposed engines,,,we are light years behind most of you on this forum as far as racing mowers,,,only one other guy is running something besides stock spindles for example,,,homemade offset wheels we are quite backyard/hillbilly,,,I am hoping to get us to the next level,or maybe travel south for myself,,,but it cost us little or nothing so thats fun