Question for those that swapped a big block into their A body.

On the subject of "up in the air" I went to youtube and watched the 440 Darts and Dusters. Very few of them were pulling the wheels like the small blocks that were running comparable ETs. That would be the deciding factor for me. It can be done, but it's lotsa more money.
Duh.... most of them weigh more than a small block. Engine alone by roughly 100 pounds. I say most because there is cases where the big block guys running tons of aluminum can get lighter than a small block. But also let's keep in mind most small block drag cars are fully built aluminum headed, intakes etc to get to those power levels that a big block can get to with decent iron heads.