I am still working on converting my truck to 12 volts with the alternator conversion and still have yet another question. Just a reminder, I have a 216 engine with a floor starter. What size battery should I use for this set-up? In the future, I plan on installing air conditioning into this vehicle. How many cold cranking amps, or whatever else that is important, should I be looking for when purchasing a battery? Thanks again for all the help with this project!