The TZ EB Mod engines are very good and priced fair, most modefied engines are very expensive but it is hard for most people to find that great deal on a modified engine. The EB Mod engines are well done and will give you that edge at big races, a stock 12TZ engine at a club race will compete with anything on the track, but a national level you need alittle more in your engine, and most racers can't handle all of the power that they have. I would say if you like the 12TZ now and you would like more performance without paying out the butt for it try the EB Mod engines from OS.
