well HPC helped me with most of it....had a LOT of problems with their controllers (their controllers are best with 90 volt systems)but their version of the 4065 and their batteries are tops...I did the schlump and had the wheels made by Reseda bikes from parts I ordered...also did some minor electronics myself may move controller inside frame (it barely gets warm) to clean up looks and protect electronics but that is a MAJOR undertaking wll enjoy for now