150cc GY6 question

[Cyclone]

I have 150GKA-2 Go Kart and I would like to get more torque out of it for climbing hills. I'm new to the world of go karts and I'm not sure if this is a GY6 or not. How can I tell? It is a Chinese kart. And I have seen the same one on eBay under the name Sahara 15cc and JCL 150cc. If some one could make some suggestions as to what I need to do to bump this thing up I would really be thankful. Thanks, God bless.