Jimmy, I suspected since the guy was in Adrian and was talking to a "super coupe club member" it might have been you. I guess not.
I noticed the EGR pieces too, but they were on both the first engines and the last ones. The guy seems to beleive it is a later experimental part from the description, but I think it is very early. I was thinking of paying it a visit too, it is probably a 45 minute drive for me. But if you are going, check out the labels, I see one on the back of a head, see what part numbers are on some of the things.
Anything with an E9 XXXX XX part number would be an early part, parts that changed for the later engines, like the cylinder head would have the F4 XXXX XX or whatever. The newest part number would give an idea when that was made. Any Ford Experimental parts should have a part number ends in EX, like E9-6220-EX.
I would look particularly for a part number on that blower top, I see something there, but I can't make out what. It is also very possible that this wasn't a Ford project, but something someone cooked up in their backyard. I think that type of intercooler/Rad setup was available in the aftermarket for Turbo coupes I beleive. The T5 is also obviously available in the aftermarket....I just don't know who could be casting their own one-off blower top...