Hey pontiactalk, i dont think my radiator is working properly and im looking to get it replaced. I checked online and found a couple replacements. Which should i choose?

http://www.go-part.com/0005-pontiac-bonneville-radiator-p-24991.html

http://stores.channeladvisor.com/crownautosport/items/item.aspx?itemid=2041610

Thanks