When I had my Z370, I tried, and tried, and tried, and waited, and waited, and waited, and called, and called, and called, and waited, and waited, and waited....for them to sell me the dual carb kit they advertised and got NOTHING, NOTHING, NOTHING from them. As far as I'm concerned, they can kiss my... Talk about vapor-ware. I doubt they ever even made the dang kit.
I've got 2 2002 370s (for my kids) and I have been pondering about what to do when they want a little more HP myself. I've looked at brownsleisureworld, and basically everythings the same as the 440 except the carbs, and top end. (possibly the timing/ignition too). The problem is buying the parts can easily get into alot of money. The best thing I have found was someone had a Z440 engine (whole thing) at Haydays for like $600. I thought that might do it. Any more than that, and I think I'll just look for a 550 Liquid, and sell the 370. They're a great learning machine, and they'll do 65 or so, but I don't think there's alot out there for them.
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