That car is a 56 so the heads are probably "C" heads if original.
Please Save all the old parts from the crusher that you can, They are getting harder to find and out of reach of the average hobbyist when they are found.
If I was closer I would buy the whole lot of them, Wait! is the lady selling the whole place? I am getting tired of spending all my spare time moving snow or cutting wood to keep warm, maybe I should just move down that way and she wouldn't have to move the cars.
Let me know what else is there.
Bill

55 Vicky & customline
58 Rack Dump, 55 F350 yard truck, 57 F100
59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?