engine would be a good upgrade, either the sh.18 or os cvrx .18. Does not do 60mph, maybe 60 kph. I have had mine doing 31mph stock with the vx .18, thats not slow either bro. A tuned pipe like the 02124 would be a good upgrade and give you more power also. There is the 02031a header will give you more power.

http://server.sohouniverse.net/~himo...&=SID#MOREINFO
http://server.sohouniverse.net/~himo...&=SID#MOREINFO
http://server.sohouniverse.net/~himo...hp?id=597&=SID

I am sure other people will chime in with their mods