If it were me Id go with a new F-body radiator, because your stocker is approaching the 30 year old mark. Ask for one for a 90 or so Camaro or Firebird with a V-8. They're lighter than stock, do just as good if not a better cooling job, and fitment is very close to original. Im thinking they're about 100 or so at Advance auto parts. I put an F-body rad in my 85 and it runs about 5-10 degrees cooler. Thats my .02