69 cutlass convert 350 auto w a/c. Replacing radiator and need to replace upper/lower rubber support pads - I see listings for 4 and 3 core - not sure what I need- anyone replace these and have recommendations
thanks

 

Take the cap off the radiator, look in there, and see if there are 3 or 4 rows. Alternately, measure the width of the end tank.

 

If the tanks are 2" across, you need the pads for the two or three row radiator. If they are 2.70" across, you need the pads for the four row radiator.