I used to have a Jet electrica. I had the one that was based on the Mercury lynx / Ford escort. Mine had a Curtis 1221 c controller. I had the 96 volt version and while it was slow it actually drove very well. The 120 volt versions have a lot more pep. If you go with lithium batteries you'll lose approximately 800 to 1000 lb. The performance and the range will increase a good bit.