HI, i just bought a 1971 duster, it has a 4 speed and a small block but no cylinder heads, my grandpa has a set of heads 2987020, but i couldnt find any information about theis heads, can you tell me if are they good?
Thanks
Here are som pictures.

 

Welcome.

I'd say 318, those rusty/pitted rocker shaft pedestals will give you a problem.

 

I could not find then also????? However, If its just for a basic engine, as long as they clean up, Hot tank, Pressure test, You should be good to go... But you got to make sure these are not beyond repair...
Keep us posted on the build... Welcome to the Mopar House !!!!

 

Welcome to the forum