For what it's worth, finally Dyno'd my P5 here's the results, He didn't list the Make/model, but my plates on the top with my name. 2nd place? It's For Sale!
HP 151 @ 5800 TQ 140 @ 5220 - Mustang Dyno
Here's the You Tube;
https://www.youtube.com/playlist?list=PLoMIW5iNsOazFrGsRsH9Q0CrOOWASsZIw
Perhaps, by some exceptionally odd chance there might be someone besides yourself who has a manifold that isn't bolted to the cylinder head inside the engine compartment that might have had the answer I politely asked for. But I suppose that's above and beyond the scope of the available viewers...