Cams for 318's

The K6900 is the milder of the two. It would be my choice.

Do you think It would gain some (not a lot obviously) power with that one?

Sounds like I should be thinking more of adding a 4bbl than a cam, the thing is that my budget right now is like $200 for and upgrade and where I am there is no way I can get a 4bbl cast iron intake easily and cheap.