Originally Posted by
deadmancourt
They are much older models than what is currently available.
You want the GX Series GX-5R Combo kit (with 2072 pipe). This motor and pipe will blow the socks off your truggy.
The older 7 port motors are OK, but you are giving up a lot of improvements and technology. Contact GO USA re the GX 5 Port.
Here is what you want - in the GX-5R model (best suited to truggy)
http://www.go-engine.com/go_engine-7.htm