727 Build for Mid-10s

I'm in luck! Turns out A&A sells pressures in various thicknesses for only $20. They've got one that's .207" as opposed to the stock .275". That'll leave me with .086" clearance in theory, which is right in the 80-95 thou range CRT recommended.

Another minor victory today - With some creative grinding and my drill press, I was able to clearance and drill the case to use all 6 bolts on the Ultimate sprag. No costly jig necessary. On to assembly...

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One other suggestion since you mentioned A&A trans.
They also sell non standard thickness steels to help dial in the clutch pak clearance.