To run pumpgas at 185psi in that combo, is a recipe for detonation disaster.
Like said ;
If that number is true, then chances are very good that the Q is real tight, so you might get away with it in a lightweight-A,
But you won't know that until you load it up, or it blows up, or you take it apart and look. But
chances are even better that the compression gauge is really optimistic ........
IMO, knowing what piston is in it is not helpful and I wouldn't spend the time to know the answer.
If it was mine, I got three ideas;
1) run it and hope it don't detonate.
2) reduce the pressure to a a known-to-be-safe level, or
3) put it on a dyno. If it takes WOT at full timing, at a normal AFR, and doesn't rattle, then I'm good to go. If it does rattle, then I also know what I have to do.
For me, this would be an ideal opportunity to learn the truth about what many "experts" would call excessive cylinder pressure. So I would just go to plan
