i have an 1989 iroc z w/ the eletric fans on the raditor. there are two of them.
was there also a one fan setup and if so what worked better. because i have one fan trhat is burntout and the no part store shows a matching part for the dual fan setup

 

i find the dual fans to be better, because if one goes out the other one will hopefully be there to back up to keep from overheating in taffic.

u can find a replacement fan from a dual fan setup from alot of places like ebay, junkyard, etc..

 

I feel your pain. I had to replace mine and found the following sources to be great:

Junkyards
EBAY (Thats where I got mine)
http://members.***.net/iroczdave1/

I just checked the link above and he does have a set for $60 a piece listed under the Camaro Parts. You'll have to scroll down past the dash pads and interior pieces.