Why is oil coming out of these?

Well Im not 100% sure his oil leak is coming out the plugs. I could be coming out the valve cover. He needs to look into it further.
Its very common for SBM valve cover to hit the intake and leave a GAP between the valve cover and head. That's where my money is on the leak. I have to notch every valve cover to make room, and sometimes take some material off the intake as well!

They have the plugs because the intake is made for LA and Magnum. When used on a LA you put the plugs in the Vertical bolt holes for the Magnum holes to cover them up. Its not a totally bad intake. I have used many of them and so far it makes the same power as the RPM. Just might need a tweek here and there, but at $100 less than an RPM, it fits the budget when needed.