What to port on a stock intake plenum?

I was given a stock 03 4.6 intake plenum from a buddy of mine and was thinking about porting it. I tried looking for porting instructions on the web but without any luck. I am not sure what should be ported. I notice a couple of spots on the side right before the intake that I could smooth out. Also, at the back of the plenum, there is a round bump but I dont know if I should try and remove that. Just wondering for the people who have ported their plenum, what did you actually remove and did you notice anything?

Thanks,

Side0ut