Where's Zippy? He'll know.
I recently put plugs in our 05 durango with a hemi. I can't remember the numbers off hand. I think it was 2 different numbers because 8 were bought at a different time. I'll look and see.

I also replaced the EGR valve about a year ago or so. Bought mine at Car Quest for around 40 bucks. I was told the dealer wanted $100+ FOR ONE. pUT ABOUT 30k MILES ON it so far, so good.