$150.00 for a TZ set up for clown racing is a super good price. If I didn't have two already I would jump on it myself. My TZs are 6 to 8 mph faster than my Rossi. The Rossi is a big heavy motor and required a much stouter and heaver plane. It also gets a better lap count per tank than my TZs and starts first flip every time, hot or cold. The heaver Clown also is easier to whip to the pits if there is a wind. So far my Rossi has won more than my TZs
A lot of times having the "most" motor doesn't win the race. When I was drag racing Pro Stock type cars my Sonny Lenard monster motor (1486 hp) didn't take home the Prize very often. Being able to drive, tune and setting up the car counts for a lot as far as winning more than one pass.
If you buy the TZ mount it on a good Clown and practice a whole lot. Just having the fastest Clown doesn't win many races.
As a side note I once asked Steve Schmit, who was a big hitter in Pro Stock at the time how much was the motor and how much was the car in winning. He thought for a moment or two and said "Everybody buys their car from one of two builder so the cars are about even so I would say the motor is about 98% but you better know how to drive or it doesn't count for anything."
Later
Richard