Another small block turbo early valiant

I had a FITech PA on the truck and I believe it only had a 2.5 bar map sensor. So 21lbs would be it. Are you using an boost gauge to verify? Also what Head gaskets? I see the head studs.
Ahh yes, I didn’t think about maxing out the map sensor. I do not have another gauge to verify. I’m using cometic gaskets.