614 fan schroud

Awhile back i picked up a fan shroud, it has 2 part numbers., 3691916 and 3691836. its 18" but i read with a little modification it will work.

I also have 3673820 and 3828291. One was for a 26" radiator, the other came out of a 74 1 ton van.

Has anyone modified one to work? Yesterday i was trying to see what was involved but it look like it would be too much of a hack job.

Does anyone have one to sell? or recommend a good reman one? Classic i think was $185.

Thanks