The mystery is over... I finally know how much boost I am making. ~8.5psi
Finished installing that (sort of... temporary mount on top of the cluster until I fab up a pillar mount)... and also the AL Priority setup and some GarageLine hood struts. Felt so nice to drive the car again, its been on stands getting this little stuff done for a month! Still need to mount the fire extinguisher and then I'll turn my attention to the stereo in the near term.