Beautiful. https://detroit.craigslist.org/mcb/cto/d/grand-rapids-1975-oldsmobile-starfire/6937485980.html
Good catch, Brad. Looks like someone put on a Monza front cover. Here's what it's supposed to look like - same for '75 and '76:
Oh, crap, you're right. I guess I liked the Chevy front end more. But that Olds one's still pretty stylish.
This is my 1975 Skyhawk. Monza's and Skyhawk's shared the same nose except the Buick had much more trim than the budget Monza.
It looks like a Skyhawk grill on it, probably had some small front end damage in the early 80's. Tough to find an Olds Bumber cover, rarest of the 3 HB models that year.