Any performance cam you choose, should really be accompanied by an increase in compression ratio. I would shoot for 11:1 or more. The compact chambers of the D series seem to tolerate quite a bit of CR without detonation. SCE makes a .032" compressed thickness, copper gasket for your engine+ your head can be safely milled .050"-.060"
When you change cams, you will want to get an adjustable sprocket at the same time.
I purchased a battery brace lost week in the colour blue, because mine short ram intake and valve cover are also blue. But the brace is a other color blue. What do you think paint it the same colour like the short ram and valve cover or leave it like this?