Most Annoying Search...Hydrobooster

[C10forDad]

I am about to go to manual brakes because I can't find a clear answer to this question...

What hydraulic booster pairs up exactly with a master cylinder with a 1.125 " bore?

Currently there isn't a parts store around me where I can walk in with my Wilwood master cylinder (PN 261-13270-BK) for a test fit. I also cannot fathom paying $600 for Hydrastop.

Things that I do know...

81 and newer have metric lines and before that was standard
These boosters were in everything from 3/4 ton pickups, vans, and more
They were installed in both gas and diesel vehicles
There are a dizzying varieties of mounting plates -> equal number of part numbers

There are too many posts that say grabbed one out of or for an Astro, old square body diesel, or something else without mentioning a part number

There has to be someone on here that has a part number.