C21 and Malossi mhr replica 70cc

Hey, my city16 just went to bits, i wanted to try something new.. I have malossi mhr rep 70, 21 carb, and all of the other bits, s6 oversize variator and torque drive and so on. I was planning to put in a one ring piston and run the c21 pipe. Do you think it would be ok?