I went to change my oil the other day and had a problem finding the correct oil filter. every time I changed it before I just looked at the number on the filter and bought the same brand, no problems. well, this time I decided I wanted a fram filter, so I looked the number up in the book and bought a filter, only it was the wrong one. I assumed that the engine came from a different year so I tried to cross-reference the number from the one I had but I couldn't find this filter on any GM application, so I called the filter company and asked them what vehicle it went on, and guess what...its for a f*rd 302! I pulled it off of my Chevy 350, I have no idea why that is the one that fits, but when I bought the fram filter for a f*rd 302 it screwed right on. if anyone can tell me how this happened I'd really like to hear it.