Ok thanks. I'm just learning about this onroad stuff (loving it after being very reluctant to get into it after 18 years of nitro offroad) so I will take your advice with pleasure.

Oh, and earlier in the post there was comments about the '07 Sphere Comp. being an issue. Well, I'm only running the ss13.5, but this speedo is tits!

Fullsyzz Please read this: I did not read all the posts. When a few of us ran 13.5 BL for the first time at the local track. SoCal Raceway to be exact. The temp was cold and the track was slippery on that night. A few guys were there and told us that we were under geared and breaking traction causing our motors to over rev. This caused the motors to have thermal shutdown. Mine was at 181 degrees. My friends was around 189. When we went to sintered rotors and bigger pinions, it took care of our problems. It sounds crazy but we don't have this problem anymore. The stock rotor will thermal at a lower temp each time it thermals. I use a pinion 4-5 teeth bigger than before and only reach between 110-120 degrees. Hope this helps. :)