for me its quality of parts and what is included in the kit.
i used the american auto wire highway 22 kit. i ended up using the gm turn signal wiring connector because i liked it better than the chrysler one. i rebuilt some stock connectors because as far as i know you can't just buy those connectors new. also used the gm headlight switch. used a stock ign and turn signal switch (changed the plug over. wires were in the same order on the plug. just different colors) used the stock wiper switch (couldn't find a new one) and just rebuilt the stock connectors. the basics are pretty much the same on all these cars. lighting really doesn't change. the ignition system was really easy to adapt to a chrysler ign. so was the charging system. it helps if you look at them as stand alone systems.. when i was done with my car there was not one old wire left in the car. not even a little length going to a light or anything.
I do not understand why these companies are stuck on the GM stuff either. It is frustrating, but like stated if you take your time and work thru the stuff then everything works out good.
