Rebuild after shot peen?

I just got some heads and a block that have been shot peened. Do I need to polish the ports of the head out before rebuilding using? Anything I would need to do to the block before building? Only going to use them for 6-12 months until I save and get some aluminum heads.

View attachment 1716036132

View attachment 1716036133
The seats should be touched up if they haven't been. I don't know if hand lapping would be good enough.