S.Stew- there is a lot of difference between the to motors, it is a 3 port instead of 5 and it has a huge cooling head that is suppose to drop the temp about 25-30 degrees.

I got mine today also

I hope to have it modified now in time for our SWS ROAR race this weekend.

I race against Ron Atomic at these races, his O.S. motors are pretty fast.

I am going to have mine modified to the new engine rules that just came out and I was promised that it will be REALLY fast.