I have an 80cc 2 stroke and I'm thinking about a reed valve kit. Im mostly interested in it because I'm looking for more low and midrange power. My motor seems to take forever to get to top speed. I think mostly because its on a beach cruiser and I weigh about 195lbs. The motor is bone stock and has been through 3 tanks of gas. I have 2 concerns I was looking at eBay kits and I've read on posts some of them are for 30cc model engines not out bigger 80cc engines. The other thing I'm concerned about is from what I've read you need to port the motor. Ive heard of people ruining the motor in the process. Also because I'm looking for torque is opening the port going to make me lose low rpm port velocity, like when someone ports a V8 way to much?