I have a 3 row copper radiator in my car now its all rusted and oxidized when i search for a replacement radiator specific to my car i only get 1 row aluminum radiators coming up would that swap work fine

 

It will work but keep in mind like other things on this car such as disc brakes, GM under designed them for the realistic conditions that these cars would actually operate in.

Take a look at the 3 row aluminum champion, its a direct drop in replacement for about $200 from ebay. One of the advantages to it is its all aluminum so there isn't any plastic that will crack and fail. Since you are replacing your rad anyway you might as well maximize your cooling capacity, you can never have too much.

 

Buy the 2 core directly from Champion. It's cheaper. I just bought one the other week for my 82 TA.

http://www.championradiators.com/Pon...1990-1991-1992