How about just installing a dual overhead cam Toyota Supra engine? The engineering and dyno testing has already been done on that one. A 3.8 liter Jag would also work well if you prefer a period-correct "dumb" engine without a computer. I'm wasting my own time by adapting a DOHC PT Cruiser head to a Model A Ford block.

My stroker crankshafts for 235 and 261 engines have 1/2" machined off the counterweights for piston skirt clearance, which lightens them up a little.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!