Judging by the bow in the hood and the angle of the front bumper, that cars looks to have some front end damage. Also, can the experts weigh in, I may be showing my overall lack of knowledge here, but thats a post car. Did they make a 71 GS post???
That is strange the hoods ether sprung or they just didn't bother to close it all the way, if you want to sell the car it seems like you would take the time to present the car in a good light and I think your right about the post car being a Skylark but I'm no expert Pete
OOPS! o No: Just proved my knowledge base! Oh well, just trying to point out things I see online others may be interested in. Tom