About 3 weeks ago I received and installed the Dewitts Camaro/Firebird Radiator P/N 1139006A (2 rows of 1 inch tubes and an automatic transmission cooler).

Here's some pictures of what I received and installed. The pictures being used by the 3 vendors listing this part number are incorrect.

 

Here's the cooling performance I've gotten out of it. The conditions were: 65 - 70 mph up the highway at 4:20 pm in Phoenix, AZ on August 6th. Outside temp was 105-110. I run a 180 thermostat. No A/C installed.

With my old single row plastic tank stock replacement (only a few years old) I've run at 220 or a bit higher under the same conditions. I have a new and complete 3 piece TA air deflector installed (with old and new radiator).