How would you put a bobber frame on a honda sl100?

I'm thinking of getting a honda sl100 and put a bobber frame on it can anyone let me know what size I should get to weld me a homemade frame How would you put a bobber frame on a honda sl100

Need to figure it out for yourself.

What forks are you planning on using?

What size wheels/tires?

Need to do the math on rake/trail, build/machine a frame jig, buy/machine axle plates, motor mounts, head tube, gussets, then cut and mitre all the tubes, tig weld together, then if you want to make it road legal, go through the inspection/licensing process.

No way to answer your question. How would you put a bobber frame on a honda sl100