Norsky has the best advice: Whatever you do, shop around the REPUTABLE REPAIR SHOPS. I lost 900 bucks on a simple recore of my original '73's to an underhanded place. Hate to even bring it up. 

Honest shops only.

Steve 

OK then!

The option for a DeWitt was never presented. Had it recored for $600. Would have gone with a DeWitt, but this one works great.

Thanks for all the advice!

Post #3 recommended a DeWitts radiator.

In northern Wisconsin try and find a shop that will do a recore, they are far and few between. Have a shop in Rice Lake that I got a quote for $1000.00 to do the recore. This was 3 or 4 years ago and the DeWitt radiator was on sale for under $400.00 shipped to me, this was not the black one. I went with the DeWitt and I'm happy that I did, it keeps the engine nice and cool at all the time.  The only problem that I had was that I had trouble putting on the oem cap on and also the Murray replacement cap. The locking ears on the radiator neck were too long. I got a billet radiator cap from DeWitt and it fit fine. It was a little expensive, but a well built and finished cap.