Hello I'm somewhat new to electric vehicles, but know a lot about working on cars in general. Efficiency was not a thought when older cars were produced, heavy engines, heavy bodies etc. So I think replacing a gas guzzler with a powerful electric motor might be pretty cool. I'm looking for a general guide on what parts I might need. I know I need a motor, controller, and battery packs. I'm looking to go with lithium packs but that's about all I know so far. Any input is appreciated.