340 Piston Selection

65 CC Rpm heads they are new and I just dropped them off at Killians Porting Service in Warner Robbins GA have heads ported and tunnel ram port matched and competition valve job done . Im building a 340 for my 51 Henry J gasser to be raced not street legal so I need compression.
YES! I remember through the conversation.
Trust me I am excited to see some pictures of this. I’m thinking totally BAD ***!
I have new
Edelbrock rpm 340 heads.
With the piston relief in it. Can the head be milled as per rules? It’s a lot I know....
Yes the 4.080 is my problem and I also would like to get lite items if possible I will go on Mahle website and see if they have something thanks again.
Better to call.

65 cc on heads looking for 11.1 or 11.5
I checked all the major piston manufactures wedsite and plenty of 4.00 stroke 340 stuff but not so with stock 3.31 stroke.
Man! It seems to be getting hard these days what used to be easy is no longer such and so.
Did I mention member Ramm?