Heh, if you really want to call the waaambulance, you should see what a typical Jimmy Casale's ST60's lugs looked like...
I bought one of his old engines many years ago, a special config ST60 with anodized blue head, done by our local southeast pro, I think its punched out to house 74 P&L w/st60 crank for a total displacement of somewhere in between... at any rate, you could get enough engine offset to satisfy a BiSlob with it, and they aren't just enlarged, they are, umm...trapezoidal? Ummm yeah, that's the ticket. LOL!
To be blunt, I could really care less what the engine lugs looked like, I was buying a piece of history. If I could have won half as many Nat's as he did against "The Paul" no less, as they traded it back and forth, I'd be on cloud 9.5.
When I buy an engine, I have 2 classes, runners, and collectors. I treat my PA's and runners well, feed them the best and use after run oil, and run an air filter, never run them over lean, and have yet to wear one out. But... I'm not afraid to do what needs to be done to get one into a plane. If you ever build one of Hunt's guppy planes to original spec, you will find out all about shaved mounts, etc. My collectors engines are for display, and oddly, I don't care if they run, just look original and pretty on the shelf, that's good enough for me.
To each his own and buyer beware, but don't be too hard on the previous owner if they were just trying to enjoy their purchase, it was their money, and theirs to do with as they pleased. It's up to the buyer to find out what he's buying and if he will be happy with it. There is plenty of fraud and bad descriptions on Da'Bay, and some unscrupulous characters that sell on there, and no, I don't agree with people who would lie to sell something, but if they tell you up front "enlarged lugs", and that bothers you, I would just dust off my feet and move on.
Caveat emptor!
EricV