Where to get a radiator and tranmision cooler lines?

Alright so i rebuilt the tranny in my 92 k1500 but the part of the radiator where the cooler lines go in has a gummy bunch of stuff in it from when the tranny was bad so its shot. My boss(bought the pickup from him) put an add on cooler on the front of it and limped it by until the tranny was completely done(it was a feedlot work pickup thats why) I got a add on cooler from another pickup that we had at the feedlot that was junked out and tranny cooler lines off it too. But i couldnt get em to fit they would not hook up and in the process i ruined the short lines coming out of the tranny. So i figured screw it if im going to do it ill just do it right so now im in the market for a new radiator and a whole new set of pre bent transmission cooler lines.
My question is where is the cheapest/best place to get these from. I did think of my hometown napa or carquest but i was wandering if you guys knew a place online or something where i could get them cheaper, or do you think i should just go get em from a parts store here in town?

rockauto.com is a good place for decent priced parts. They have reasonable shipping charges too. You could probably even google search for "rockauto coupons". There are usually ones that will take off at least 5% off the price. Problem is after the shipping charges, you are sometimes better just going to napa or oreilleys.