Hi Brad,
The fan is from a Lincoln Mark VIII; (93-96). It pulls ~2300 CFM on low and ~4500 CFM on high. The articles that I read describe this fan as the 'Ford 9" rear of the fan world'. Guys are using on all types of street rods, etc. It really does fit nice and neat, and it cools well, even with the stock 3-core brass/copper radiator. I made my own custom relay harness using Bueller 40/60 Amp relays and PED (GM) relay sockets. I have the ECM control low speed, and use the A/C request signal to command high speed. The alternator upgrade is decribed in an on old post on this board.
Let me know if you want some links and I'll dig them up.
Bill