I could use the help of some of you Pros in identifying the radiator in my '68'. From other #'s on the car, it was born a base model V8, probably w/AT. The radiator has a brass tag built into the fin construction with the following info on it: upper left corner has two inverted 'V's, upper right corner has the number '19', middle has the number '3750337', across the bottom is 'Made In USA'. The radiator measures 21" x 17" w/ 3 rows and an A/T cooler. Any help w/ the ID would be greatly appreciated.