Had the inner primary off my 2010 for a compensator upgrade. Got a good look at the rear drive belt on the front transmission pulley. The pulley could accept a belt over twice the width of the belt on there, looks like a little elastic band. How much can you safely build a motor with that belt? Looks like a governing factor. I'm planning on upping the cubic inches some and now i need to do some checking on this issue as i don't like the looks of that belt too much