Add me to that miserable list!!! When I got this "new" 455, They had about a 3' dipstick with an extension bracket sticking above the engine, which I didn't really think anything of at the time, as it was chrome, and looked good. After installing the engine and filling it up with oil, I found the level only came up about a 1/4" on the stick, and there was a weak scribe line there. I was none too thrilled.
Pulled the extension off, and stuck the stick from the 326 in there, worked great (kind of-depending on which way you stuck it in. One side read correctly, the other side I scribed a new line in the backside at the full level). Till I started it up and saw the top of the stick moving. Pulled it out, and damned if the tip wasn't broken off!
(Changed the brand new oil AGAIN, and did get the piece out.-I had visions of the piece getting pulled into the crevice between the crank and block, scoring and eating the crank counterweights, then having the thing explode internally from the sheered off piece. Call me paranoid!). THEN
I read about that inner tube connected to #3 or whatever crank caps.
Wasn't about to pull it back out for that. I've rebuilt a couple of engines in my time, but this was a new one me. And I didn't even rebuild the sucker. I now carry the stick in the trunk, and stuck the stub of the other in the tube for show. Just have to figure out a concealed area out of the way to put it back there.