I NEVER mentioned Speed Tuned ONCE. I did mention TZ, just not Speed tuned TZ. Plus this does not fall under inexpensive. I can get the 12-3 and LOTS of others engines cheaper then the speed tuned. At least the places I purchase from. I have never seen a OS Speed tune run, only a regular TZ. I would hope it keeps up with the Nova's and JP's since it's in the same price catagory. My guess is that Speed tuned that won in Toledo was not purchaced off the shelf, though I could be wrong. I have heard they are pretty fast though. Plus I'm not familiar with that track, but it sounds like you are. Trust me, I have nothing against OS. I even owned a regular TZ and my airplanes are filled with OS engines. But with my experience, this is NOT the engine I would run at a large track. Maybe the Speed tuned...yes, If I knew more about the Speed Tuned, I might purchase one of those some day. But for now I'm quite happy with my RB's, Novas and JP's and soon IDM's. But either way, thank you for the Toledo race update. What car was he racing that OS in? Just curious is all. Later