I replaced a bunch of tubular cam locks on our filing cabinet a few years back. I bought a lot of 40-50 them on ebay for around 3 bucks (shipping was about $20 though). I think there the locks your talking about. I'd like to do this mod, however, I'd try and go with a stainless set due to rust. I doubt the chrome on these locks are very good. I'll have to find them and see what there made of. All my locks are keyed a like. I'll send you a pair, that way "we" can both have an easy way to your engine