Tell me what you know about modding the 125m laydown

[The Goat]

It's a platform I've never looked at before. Just gonna be a little cruiser. Already have a pit bike exhaust coming. I need a mew throttle cable, carb, and dash. Has anyone done a larger carb swap? If so, what did you buy and where? I'm going to do a bar swap swap, so I would like to use a cheap pitbike thumb throttle.

Is anyone making reproduction wiring harnesses? And is there anywhere to buy replacement foam?

Thanks for the help,
Goat