I'm in the process of putting one on the kilowatt. I wasn't really looking for one, but got a good deal on it. ($100, very low hour, still under warranty) I put on an rlv pipe, 390 carb, and k/n. Probably end up swapping in a 390 cam too, I've heard it's a decent low buck upgrade. However , if I was in the market for a new motor, not sure if I'd pick it, probably spend a few more $ and get the 420. Although I've not seen the $180 ebay motors firepower is talking about. The ones I've seen on there are more like $300........??????