LOL, I started out with a $120 Diamondback bike from Craigslist and poured over $1200 into it. Much of it was in R&D to come up with exactly what I wanted. I use the Scooter Guy center-frame mount with shift kit. The reliable Tanaka 47R 2.8 hp engine with matching three piece expansion pipe is the key component which perfectly matches my needs as a fast commuter with excellent acceleration. The 4.25 hp GP460 has more power, but is plagued by its unreliable clutch.