I have not found anything on a Go that was not interchangeable with a Novarossi. I have a Go crank and rod in a p5x that runs awesome and Tq'ed a rc pro series race in a Truggy (Steve Hale was there) I have a Rb C6 sleeve and piston that I dropped in a 3 port race. I only have time on it up and down the driveway but it rips. I like to only run what I sell so I haven't raced it.

As far as the ealier post about how many gallons you can get through a Go. With any motor it depends on how hard you push it. If you run a motor as hard as possible to get the most power and fuel economy expect atleast 2-3 gallons less than if you ran it richer. The Go's hold up very well, I would say the piston and sleeve hold there pinch as good or better than any italian motor. Cranks hold up almost as well as most italian motors, I am confident you will get twice as many gallons on a Go than an Os V-spec. The best part is the price of the Go parts, a Go rod is $18.69 vs. $50.00 for a nova rod or even more for some others.

Rex