I have a 1975 440. No bottle. Edelbrock 800 and Performer dual plane intake, headers, X-pipe cross-over, 6 pack cam, stock heads. Going on dyno tomorrow. I am running mine on Rec 90 (90 octane ethanol free). Runs great. No ping. 20* initial. 36* all in at 2,200. I mostly show the car locally... with an occasional A to B. PM me here after tomorrow and I'll tell you what it did if you are still interested.
