I look around for the best and highest quality parts I can find.
Swap meets are fun, and you can get some good stuff for a
good price.
Mustang catalogs, for repo and some NOS parts, but you pay
for them.
Summit, high performance parts for a fair price.
Pick-N-Pull, used stuff you have to pull yourself.
VMF, got a mallory dual ponit for $30.00 bucks!
Some of the fun is finding the parts, and the
stories you get to tell about where you got it.
Have fun and Good Luck!