Keith,
The 2710 fan should work - I think I used a 2711 since I needed some additional clearance (if you look at the Hayden Specification chart -
http://beta.haydenauto.com/upload/Ha...fan-clutch.pdf ) I had to have the shorter "C" measurement with a newer engine.
I do not think your fan will work - the 4 blade fan was standard, if you have a 5 blade fan maybe you have some additional options on the engine?
I do not think the original fan works with a Thermal clutch unless your car came with a fan clutch. You will need a fan with the center mount cut out like one of these - (pic attached)
Also, do not use the application chart - use the spec chart I linked to above to make sure the dimensions are correct and you should be OK.
__________________
Beri Fraley
Strong, Proud and Ugly
If you find yourself in a fair fight, you haven't been trained properly.