For parts, I like to use car-part.com to search junkyards. While they may not list the exact part you need, you can find a nearby yard with a Lumina and then directly contact them to ask about the parts you want. I don't have the time to go to junkyards myself, but for a few dollars they will pull and ship the parts to you. Shipping a hood isn't cheap so hopefully you get lucky and the place is close enough for you to pick it up yourself.
I'm looking forward to seeing your before and after painting pics.
And I agree about not getting newer rides, I keep shopping for newer cars but the parts are so cheap for w-bodies that I always end up just deciding to keep mine a little longer. My daily driver 95 costs me about $100 a month in repairs+maintenance+depreciation (hint, the $100 is all parts, I do almost all my own work and my car is fully depreciated lol) and the math just doesn't work out for getting a newer car.