Hi, thanks for the comments, the engine is the 69730, and the pic posted above is exactly the cap I have (on the right). If I could eliminate the metal piece, I would should have enough room. I'm at work so I can't provide the exact clearance. I went to O'reillys and they were worthless, their inventory is all make and model specific, so they can't just sort by low profile Honda gas caps. they need exact model numbers. I will try autozone on my way home.