Is this worth it? 1974 440

I was counting on pirating the 383 for anything that was weird on the 440.
Can I use the stock car manifolds off my 383 in an a-body or do I have to use headers to get them to fit in the engine compartment.

Also if I were to try and install a cam now. What would be a good one for waking up this motor a bit (with the current 452 heads) that would be good for average street use. And does anyone have one they would like to sell me.