If you do move forward, your best bet is to transplant the complete drivetrain out of a hybrid automobile. Perhaps a 2nd gen prius. Then, find or recreate a plug-in-hybrid system for it to extend the electric-only capabilities.
But, I agree with prior post. Its a lot of work to build a hybrid from scratch, and you probably won't get the results you are hoping for.
But, I agree with prior post. Its a lot of work to build a hybrid from scratch, and you probably won't get the results you are hoping for.