Mom was cleaning out a drawer in her garage about a week ago and found this. My parents had a 1975 Buick with 350 engine back in the late 70's and I'm sure that's where it was intended to be used. Box is decent, base plate has just a little bit of surface rust. No way am I going to cut it. A couple of things caught my attention. I thought it was interesting that it was built by Champion Labs, of course WAY before Champion and Fram jumped into bed together. I also thought the fact that it catches dirt down to .000014 of an inch might be stretching the facts a little, LOL. I would have like to have them verify how they got that spec, but now it's just nostalgic filter porn.