they're not collector status. I can't call vintage cars "heaps", but it is a "boat".
Based on a quick search of rockauto, OPG, Classic car Industry, etc., aftermarket support isn't too bad. Interior upholstery support maybe kind of weak.
Yellow not my favorite. If I was wanting a vintage car to spend money on, I'd be wanting my Monte Carlo again, but they have sky rocketed in price whereas 70's Impalas not so much. So there's the money part.
Beauty's in the eye of the beholder. Time, labor, money?
I'd have to pass.
Great cars though.