Tool Man Mike,
We ran a 273/235 HP Commando back in 1967, with a 67' Barracuda Fastback.
And ran it from 1967 thru 1971 in Stock Class.
Since we bought the car 'practically new' in 100% stock trim, we had a chance to
have it tested on a 'new' Bear Dyno Machine.
I can't remember the exact numbers, but it was not near 235 HP @ 5200 RPM
'at maximum level'.