Double check my engine builder please 340 stroke

I feel your pain. I am going through the same thing. My head is swimming with heads, pistons and came. Block is at the shop right now and I have to decide which Scat kit and which head. Right now I am leaning towards the Scat kit with the -5 CC the Edelbrock RPM heads with the 63 CC Chambers. I will be watching this thread carefully. Good Luck