P.S. mechanic says the radiator is the copper kind (NOT plastic). He's not sure if it's three or four row, but he'll find out in the morning. If it DOES turn out to be four row, copper, and high-efficiency, any reason not to jump on it? It's about 100$ less than Ability and will shave off 3-4 days of waiting. I don't want to make a bad choice here just to save a little time and money, but if all else is equal, does it seem like a safe bet?