I've seen these installed in different directions, but I want to know once and for all the direction that they should be installed. I keep hearing a metallic sound from this wheel(front passenger side).

 

?Where's the drum, I only see a disk?

It really doesn't matter what way they point as long as the internal passages are angled backwards compared to the rotation of the wheel if they're angled at all.

 

dam....I meant to say disc. If I understand what you just said, then this disc is installed wrong. This is the front passenger disc.

 

I think what black91n/a is trying to say is:

Direction of the slots/drilled holes does not matter. The most important part is if the rotors are of a curved vane design, they need to curve back towards the rear. That way they are cooling properly. The slots/drilled holes are meant to shave the excess on the pads.

 

looks like something is stiucking out of your caliper and grinding the disc.
try taking the caliper off and looking at it. i'd guess on of the low pad warning clips is in wrong.

 

This being the front passenger wheel. from what you are saying, it is installed wrong?