Tom,
It's my own home grown "Gonkulator" computer. Been working on it off and on since the 1970s.
Well ok if I make your car 100 lb heavier, shift really slow at 3600rpm, and with a very gentle launch, and knock off 4% power across the board for the tired compression readings you got (probably a fair guess) I now get
Torq 168 at 2800
Powr 125 at 4500
2.91 60ft
13.18 at 53.7 1/8 mi
20.39 at 67.5 1/4 mi
15.7 0-60mph
Hey, it will still nose out a 1-bbl Rambler Classic (tested Feb 63 Motor Trend).
If I compute your new build the same way (same slow launch and gentle shifts, but at 4500rpm), I compute
2.77
12.06 at 57.9
18.71 at 74.7
12.1 0-60mph
Still a lot faster, see what the stopwatch has to say.
