I use to run Go engines long ago, back when the 5-port was the silver head...and luved them. They were a cheap, fast, long lasting, engine...if you changed the rod after break-in. Then they changed them and muffed everything up. The price I saw for the new GO is $265...even more then the popular Lutz engine. Before Go charges that price and wanting people to buy them...they will need to prove themselves all over again...its that simple.