Thoughts on the 452 heads

Get realistic prices on all the parts and labor before getting too far into it.

What it will cost to rework the iron heads can vary greatly depending on what the shop rates in your area are, along with the condition of the heads you’ll be rebuilding.

I don’t mind reworking iron heads, but they’re not really all that cost effective to have me do them anymore....... unless the heads are in very good condition to begin with, and you’re not looking to have a high level of modification done.
(Or it’s a restoration job where the correct heads are preferred...... or they’re going to be used in class racing where the OE heads must be used)

Ede E Streets or Stealths are usually more cost effective.

If you’re planning on tackling the port work yourself, compared to the 915/906 heads, the 346/902/452 style intake port is more “beginner” friendly from a porting perspective.