My 67 stang is currently in need of new wiring. None of it has been replaced and there are a bunch of places where the wires are cut, worn, missing, etc., and I'm going to do a complete rewiring. I am wondering if it would be a lot faster/cheaper/cost-effective to buy a new wiring harness, or if i could just buy a bunch of wire and run it myself. Also, if i did buy a new harness, should i buy the exact fit one from painless (model 20121), or should i buy one of their other universal models that would be a lot cheaper (models 10102, 10202, 20103, 20104) because i am on a tight budget. Just wondering if anyone has any experience with this type of thing and has any good advice.