Yeah man. The TZ kills. So light and easy to tune. Once the tz has had a pit of use I will go another picco .28 p3 and put it in the revo. But right now the tz is a killer. I hope to see your MT2 go that fast. But you may need brushless, I will be doing a brushless system in mine soon. Traxxas one. Will be a few months though.
Anyway, the TVP's are innovative rc TVPs off there site.
www.innovative-rc.co.uk. About 140$ for the 2 plates (AUD). Free shipping though and the plates are of the highest machine quality. Ill check out that rotostart thing, I have an old rotostart lying around Ill let you know if you can fit the shaft in there. They add some weight but they are extremely strong. He has racing tvp's for sale if you are looking for lightweight. But when you have a picco in there you will love the 4mm thick aluminium.