Put the cam in around 107-108 ICL, run a performer RPM (the longer runners of the high rise will actually HELP the short stroke ) and I'd go straight to the 3.91's. Use a thin head gasket and mill the heads maybe an additional .020, you have no quench but the extra CR will still help.

Also, opinions vary but with that old general kinetics Summitt grind, a set of Rhoads lifters will actually help take out some of that rather long duration and make that cam a bit snappier.
that is actually a decent oem replacement 440 cam. I don't like the wide spread for a 383 (that really needs help inthe middle), my real preference would be the Crower 271HDP 224/234, .486/.496 but have it custom ground for a 108 centerline (std is 112) and put it in your motor +3 at 105, on paper it's similar specs to the Summit, but it's a much better mopar lobe and it makes a mild 383 run like a scalded dog

The Torker FWIW is a decent 383 4 speed intake, I ran one with a tweaked thermoquad and it was pretty close et wise to a Street Dominator, but that motor had 915 closed chamber heads and 10.5:1, your results might vary. But this was before the RPM dual plane gave us a true high-rise dual plane option, like I said the longer runners (with the right cam especially) will actually enhance torque at a lower rpm with a short stroke motor. And the RPM doesn't have any severe/acute (<90 degree) angles like most of the low rise dual planes have.