New heads

Both sets of Edelbrock head I got were very good OOTB.
I purchased a set of ProMaxx chink castings heads that were bang on perfect.
The wife purchased Trick flow heads that were bang on perfect.

The machinist will make quick work out of less than perfect heads but garage heads will require a bit more time and money.

As said above, cleaned up 360 heads will work great. So would edelbrock heads. It’s really not about the bore size but about the combination.

The wording, “Mild Cam” really means nothing without know what the cam is or there specs. Do you have the cam card available or know exactly what cam it is?