rebuilt Twister with 2.288" piston

[irmachinist]

I have a hammerhead twister 150cc with a 2.288" piston and a .594" pin. The wrist pin is worn .01" where the rod engages it. The rod measures the same as the piston holes, so I'm thinking the pin just had a bad heat treat on it. I'm trying to find a new piston, cylinder and pin for this thing. Anyone know where to find this? The place I bought the last one has gone out of business.
Thanks
ir