Go to the link below and see my post. It's the best fan upgrade you can do as far as I'm concerned.
Cooling Fan
If you browse around the site (holister road) referenced in my post you will find various part numbers for the fans. Then check out
www.rockauto.com with those number and you can compare the different size shrouds and find one that fits your radiator best. There were several models out there for different cars that used the same fan assy.