340 A body versus 383 B body

My bone stock 340-s fastback auto, 3:23 open diff ran 14.97 at 97 mph. I had to walk it out pretty good to get it to stick. I was a kid, there was probably 14.6 in it. Weight hurt the 383 then and still does.
So do you think if we swapped your (we'll give it the 14.6) 14.6 340 into my Fury at 4350 lbs at the start line it would have ran a 15.2 ?? You'd be adding at least 800 lbs .... maybe a 1000 lbs ?? My thought is it would not. Also, there'd be a little more wind resistance in the Fury.