Thanks for the reply Scott. I have read on the NITROKB website and you have a TON of useful information there. I look foreward to building and running the car. I will be using an OS TZ which I loved in the G4S. My first engine was an older Picco but the power is very steady with the new TZ. I run on small parking lot tracks. Any setup help would be appreciated. The nice thing is 75% of the guys I run with have MTX4's.