I think everyone lost track about what is going on here.
We have one guy talking about BBC open chamber heads that cost about $1,650 bare and another person talking about BBC closed chamber head that costs about $2,100 bare or $2,900 depending on what angle they are.
When Pat runs his 14* or 18* heads he will run a different style pistons for those heads.
These heads let him use a piston with a smaller dome and still put him over 15 to 1 if that's where he wants to go.
The heads Pat has will put him at 1,000 hp or more naturally aspirated on a 565 engine.