Doesn't look like a bad deal for the $4500 asking price, Looks to have a the Stock Monza V8 parts so it should cool OK. More info other than why they painted it the horrible (IMO) colors, and that the interior needs to be redone would be nice. Like does it have a 262, 305, or 350 engine? What Trans & rear axle? Do they have all the original trim pieces that were removed? On the plus side it seems to have the almost impossible to find front arrowhead emblem that was unique to Astre's & Sunbird Wagons https://losangeles.craigslist.org/sfv/cto/d/1975-chevy-vega-pontiac-astre/6633760336.html
Just Noticed its also on Ebay with more pictures but no more info. Looks to have the original 1975 4-link rear axle (7.5') but no interior pictures.
Depends if it has A/C, Power Steering,or a smog pump, I think it is correct for a car with non of those options, but rarely seen with a V8. But you may be correct. But it does have the short water pump, but looks like the wrong exhaust manifolds.
All factory Monza engine accessories hug the top front of the block very close. Like almost centered with the alt. And if you notice they are tensioning the alt belt by tying it off to the fenderwell
That's how I did my last SBC V-8 Vega all Monza parts. Rams horn ex manifolds are NOT factory Monza LOL
I could have swore my 79 Starfire with a 305 and no power steering or A/C had the Alt mounted centered on the engine, but you are correct it was much closer to the block than this one.