If you want a new radiator and don't mind going with an aluminum one, Champion Cooling offers a unit for you. The EC1635 or CC1635 is made to fit your car.
I am a dealer for them and sell the EC1635 (2-row version) for $189 + $25 shipping (within USA). The CC1635 (3-row version) is $209 + $25 shipping (within USA).
If you want to see the full specs on this unit go to
http://www.championcooling.com/Catalog Online/CHAMPION.CATALOG.htm
then click on the link at the bottom for 1635