Closed chamber with flat tops

That's what I wanna hear. I realize it is by no means a radical cam and should not see clearance issues and didn't know about the open/closed valve height...thanks.
Just want to build a dependable little 318 for the 68 Fastback I just picked up. Going for a vintage type build with a '68 LD4B intake, old '61 413 600cfm carb, etc.