That's a lot of bike to move around with a 125cc engine. That swingarm probably weighs as much as the engine itself. I'm sure that it's fun, but I would want at least a 250 in that chassis, if not a 300.
He didn't ask if the owner put it on track, he asked if you put it on track. Sheesh. Just swipe the keys one day, hit a track day, and report back.
pretty sure i saw that TM go down the track at Nelsons last May, owner is a great guy and spares nothing on builds - if it's who i assume it is