Just picked up a 64 GT

Pulled out the seats. No build sheet, figures. But I did find a box of chocolate covered ginger cookies, and a box of birds eye succotash. MMM goood. Pulled up the carpet and found only surface and just starting to ferment carpet and pad. Got the car in time to save the front metal. The back window botton has rust thru in a few spots, as there was stuff growing in the window trim pushing it out and opening up voids and filling with dirt/sponge for water. Only questions so far is "are there supposed to be latches for the front buckets to hold them from folding or do they just sit there under there own weight? Second the only seat belts are up front and they don't even have two buckles, just a kinda cinch deal like a old pant's belt." Let me know what you guys think of this or know. Thanks.