Picking a master cylinder for a 69 barracuda

Correct boosters are getting rare and usually need a rebuild ($350). That said, I found one for my 1965 Newport on rockauto a few years ago for $75, but just lucky. A-bodies need the stand-off bracket with lever which you must source from a used car. I put one from a junkyard 1974 Dart slant on my 1965 Dart 273. Forgot why I didn't use that booster (too large?), instead used a junkyard one from a 1990's Intrepid, filing the bolt holes slightly and using nuts on both sides to tilt it up slightly to clear my aftermarket valve covers. I could install many 2-bolt Master Cylinders on that booster (not Intrepid since tilted reservoir). I used one from a late-1990's Breeze w/ ABS (2-ports dbl-flare), but a 1980's Dodge truck MC "should work". See my avatar. There was a full kit on ebay for $175 a few years ago, using a GM-style booster.