Suzuki CS50 Roadie bore size change

I have been contact some of technical about increase the cylinder head bore size as my is 50cc I was think of go about 70cc to 80cc ish, none of technical able to help me. I was wonder if anyone knows if Suzuki CS engine is same identical on other scooter to help me find for parts larger bore kits easier.

My is 2 stroke cylinder is face vertical.

 

send the barrel to PJ Motorocycle Engineering. They will bore it to 70cc and supply the piston kit and gaskets. Probably cost around £90 - £100

 

Thanks for your reply!