50cc hp2 rock solid engine, anyone running one?

[2strokejosh]

Hey guys I'm ordering a 50cc hp2 from rock solid engines tomorrow and was just wondering what's peoples thoughts on them? like haw well do they proform? These engines look neat and will be a fun new build =]
thanks
Josh.

 

[2strokejosh]

And my stickers came in the mail today =) thanks heaps! will post pics up when my cruser build is done.