Need lock cylinders/pins

Hi folks,

The car I'm working on is a '75 Dart.

I'd like to find a few old door or trunk lock cylinders - or the pin sets from some - so I can rekey my door locks to match my ignition. I tried looking at small sets of pins to buy but I'm not sure of the particular type I would have to look for.

I know I can probably find a locksmith to do it for me, but I'd really like to try to do it on my own, first, just for the experience.

I'm in the Columbia, SC area if it matters.

Thanks!