The dish in the piston looks pretty shallow, so I’d say it has the correct pistons in it.
It’s worth verifying the cam timing is correct, but 4deg off(on the degree wheel) isn’t going to yield 50hp.
But if the cam is retarded I could see that correcting it should bring the tq numbers up closer to what I’d expect.
The cranking pressure is in that zone where it’s hard to tell if it’s good or bad(it’s obviously not “way off”).
I don’t know if this was brought up or not, but which spring package did you get on your heads?
(That would only affect the upper end of the curve)
It’s surprising that shop has an expensive dyno....... and no air turbine? Crazy.
What are the intentions for the motor?
Street car? Bracket race car?
If the power doesn’t improve....... does it really matter?
If you haven’t read thru this one yet, it’s a good read:
Degreeing a Cam, or not.....