The early and late bodies are the same except for the area around the headlights (the squinty headlights on the later cars v the waterfall headlights on the earlier cars). The doors, roof, and tail are the same except for bolt on trim pieces.

Rear of the roofline is too different.

The GA's nose looks too short and sloped.

The top of the window line suggests it isn't a Grand Prix coupe. Compared to the bottom of the window line, the top of the window is too long and the slope at the back is too vertical.

Probably not useful for distinguishing between the smaller (Century, Regal) and bigger (88, Le Sabre) alternatives. Wheelbases are almost exactly the same (109" v111") and length is only 6" different.

I think it's a later 88, after Olds cleaned up the lower bodyside for more of an Aurora look.

That's my bet.

So one of those Butter Council creeps got to you, too.

The Apollo 12 crew set it up to get matching cars.

Depending on the state, registration may be cheaper for the appropriate truck tag than the passenger car tag. Plus, Mr S10 Sandbag Guy can pretend he actually drives a truck.

If you want plenty of reasons to buy this car, search Craigslist for cars under $1201.

Any clean, luxurious car in very good condition with no immediate repairs needed is worth $1200. Doesn't need paint or body repairs to be presentable, so could start driving it to work tomorrow. The fact that it's interesting is a bonus, IMO.

Vintage racers usually don't carry crash parts for bodies and suspensions. They tend to do winter inspections and overhauls instead. But, as you say, it's a simple and routine repair.

These cars are pretty easy to repair: sheet steel, fiberglass, sheet aluminum, simple castings with complex machining. They were bent and fixed back in the day, too.

Many 70s grand prix cars are raced routinely in 'historic' races.

Dunno. He hasn't stopped vibrating.

Highly concentrated manliness.

Reminds me of AJ Foyt's line about the trees around the track at Le Mans:

In a peripherally related note, I think my whole life would be improved by a touch of the funk.

Only if it were built up as a London Sydney winner replica.