Not verified but here's my input.. :
The small Ford "Metal Shim" head gaskets application sometimes cites fitting both 144/170 and 200 . Without a verified part number I would assume it's the fairly common
7916 144/170 gasket. The 200 cyl bore application gasket is harder to find:
Truthy archive:
Ford STEEL SHIM GSKTS:
> 144-170 CID CODE-6051A CODE-6051C
>Aftermarket 144-170 CID Fel-Pro 7916 SH, Victor 1163BS, McCord 6483
>Ford 200 CID C3OZ-6051A or C5AZ-6051B
> Ford 250 CID C9DZ-6051B
Have Fun
The last 200 metal shim gasket I got on Ebay was NOS but had been folded and creased - reluctantly I returned it - still wonder if it would work

...
Currently run a steel shim 6051 OEM gasket on C8' 170 (MAverick) with milled
worked D7 head/2bbl/headers. - At @9.5:1 cr 170 runs strong . Deck and head prep and careful 'torqueing is encouraged.