Magnum valve seals, which are which?

So the full gasket kit I got for my 5.9 includes valve seals. It had two bags of 8 each. 8 are red, and the other 8 are black (the rubber part of the seal). But there's no indication on the bags, which are the intakes, and which are the exhaust. They look identical except for the color.
Any ideas?
I can post a pic of them later tonight.