I think of all the go engines the 5 port .21 is best for truck. It puts down good power and gets decent runtime. Although I don;t run them now I was just helping a guy on another thread and found this:


http://www.youtube.com/results?searc...rch_type=&aq=f

Go 5 port in action on a truggy


Correct me if I am wrong but is this the most current model of the go 5?

http://www.carolinasrc.com/Webstore/...idproduct=3886