hehe.. I know this first hand since my landmax 2 is based on the 7.5 sport. Ohh forgot the sport models also have only 4 gears inside the diffs instead of the standard 6 gears and only 2 brakes instead of the 4 brakes that the standard 7.5 buggies have. imo.. Kyosho just cut way to many corners on the sport series 7.5's that they shouldn't have. I've talked to lots of people that wish they would have gone with a Kanai buggy or at very least a standard 7.5 kit insted of the sport. seriously look into the Hyper 7 series. Al's carries parts for them and there is a dirt cheap parts source on ebay for Hyper 7 parts. they are great all round bashers and handle the track decent enough for it to be a lot of fun at a place like leisure hours.