Just how quick were the 273 Commando's in the Quarter-Mile.

For those arguing that 273 4bbl Commandos were faster than 318s, stock for stock, that is to say,as delivered to the dealers; I once bought a 71 Demon 318-2bbl-904-7.25 pegleg,single exhaust,etc.,that went hi 15s, totally stock.It trapped in 2nd gear,lol. I was 2nd owner to my brother-in-law.That Demon was quite a bit heavier than the earlier generation Darts and Barracudas.
I still have that powertrain. Sweetest shifting stock 904 I ever came across. I cloned 2 more 904s off it. Sold one, put one in my S for winter, and the original is on the shelf.
Just saying.