Indy heads

Thanks guys, will wait to here more after you get her running. What is diff on the CNC version? And what is effect on compression with these heads> I saw the reccomend like 12:1, but if you are running say 10:1 what do you end up on a .030 over 340 416 stroker?

thanks! They look nice and have great flow numbers, what intake do you guys use?