Sir khud frame bana liya tow chassis number to hoga hee nahi, register kaisay hogi bike....not possible. The two unique indentification numbers required for registering a bike to make it road legal are:
1. Chassis Number
2. Engine Number.
Engine number and chassis number both can be changed on the papers, its possible.
One way to make your own frame is use a donor frame of any cheap bike. kisi purani 2 stroke bike ka frame lelo and modify it according to your needs. Thats the only way arround that I know of.