I still have the SPAL Fan, but it will take me 2 weeks to get it. It is in Albany, GA. I thought I brought it up with me when I sold the car. I have the radiator on hand though.
The trans:
It has the mechanical diode, instead of the one way roller clutch. And has the 4r70w intermediate clutch set up. That way the intermediate clutch pack has 4 clutches instead of 3. And has the "A" OD servo..
the direct drive has the upgraded clutch pack too. It also has a hardened input shaft and is wired for OD delete and a transbrake if needed.