I would wait on the LiFePo4 cells. When I was considering all of this, I decided that an electric car with LiFePo4 batteries would be much more sellable if I had to sell it. What pushed me over the edge was finding a car that was already started for me. I also felt that I could cut the cost by selling my gas midget when I was done with the conversion. It worked out that I bought my electric midget with warp 9 impluse with mounting done for $400 more than what I sold my gas car for. That included $800 for shipping the car in from California. Had I started wih my car it would have cost more. If you want to do the Karmen, then it will be hard to find one already started, but there are some good deals on cars people have given up on.
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