If anyone is looking at upgrading your fans , you may want to check this site out. http://www.v12s.com/indx.html
Wow, $698 is a good chunk-O-change for a couple of fans. I did the same thing myself with Hayden fans for a couple hundred if memory serves.
Yes, two Hayden fans--available from around $75 each at Pep Boys if I recall--plus some self-fabricated mounting brackets/hardware will do the job quite nicely. Research many threads on this in the FerrariChat archives. (For 308s.)