That is some serious power.
It may seem odd but given the way those new heads flow, as I compute it you might have another 30hp or so waiting with some more tuning, unless that dyno had mufflers on the end of it.
If the 3600 lb w/driver is right for that big Cougar, here is my prediction, open headers and underhood air intake:
1.59
7.22 at 94.6
11.37 at 117.9
Go hammer on it and post back, the 1.59 assumes the car hooks, that is the hard part at least for me.