That price is crazy, a leaky radiator has nothing to do with the head gaskets. A Northstar is designed to run for several miles without ANY coolant with no damage done. If your worried about head gaskets you can do a block test to find out.
I had to do mine in the 04 last spring, the radiator shop quoted me $700.00. I said thanks but no thanks and did it myself for the cost of the radiator, hoses, and a jug of coolant. Wasn't too bad of a job to do, only took me a couple hours. Here is a video
I had to do mine in the 04 last spring, the radiator shop quoted me $700.00. I said thanks but no thanks and did it myself for the cost of the radiator, hoses, and a jug of coolant. Wasn't too bad of a job to do, only took me a couple hours. Here is a video