The Camaro will have a higher value when you're finished, they are both going to cost the same to build right? To me it's a no brainer but if you're a diehard Nova guy and that's your dream car I would keep the Nova.
I love my nova to death and will never part with mine but if you can you should. I will keep mine because it is my first car so i will never get rid of it.
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Mike your friendly USAF B-1 CREW CHIEF
72 Chevy Nova in pieces trying to rebulid this bucket of bolts (really just a labor of love)