those yammies are pretty good but they lack handleing once you do them up and the clutch failed on me after around 1500kms...inevitabley i had to replace lots of stuff...it had athena 70cc kit with carbon fibre reeds, 5.7g rollers, athena delta clutch, kevlar belt, leo vince rr pipe and a yellow contra spring...that would make it hit around 95kms with stock carb but the handleing was the %!¤z! but very reliable after the upgrades and it would cat walk on command...if your budy is around 155lbs that is a killer set up and pretty cheap overall....i can´t wait for summer after i break the gtr in and derestrict it i´m gonna get the 70cc kit and a 15/50 primary gear set...that should allow it to cruise at 100 so i could potentially go on the highway...do you know where to order stuff for the gtr?