I just wanted to get some info from folks who have ordered from Rockauto, as I never have. I have been looking at a few oil filters on there out of curiosity, but noticed that they all list "alternate part numbers", some just a few, and some list dozens of part numbers. When you order, say a Champ XL filter for example, do you actually receive a Champ XL filter, or just whatever they feel like sending off of that list of alternate part numbers? Seems like a bit of a gamble if that is how it works. I couldn't find the answer so I figured I'd see if anyone has experience with this. Thank you very much.