And how is a dent going to possibly cause need for an engine rebuild? It's pleated paper stuffed into a can, there is way more surface area than required for sufficient flow. H.D. filters are as big or bigger as the filters on either of my V6 autos. If the mounting surface isn't deformed no harm. I believe in being cautious, and also don't like tossing money away. I could be wrong here, give me your wildest worst case scenario to open my eyes. Please read above as written respectfully, not inflammatory. Thanks