Sounds like a good find!
Honestly, i think the '73 and up cars were not given the respect they deserve.
Being a '76, a few tip offs would be amber front turn signals, emergency brake to the side by the kick panel (foot push) instead of mounted to the bottom of the dash, (hand pull), and if it was built after January 1st, it would have disc brakes on the front with big bolt pattern wheels all the way around.
The V.I.N. would be VL23G6 XXXXXXX and it would be a Scamp 2 door hardtop.
The 2 door post Valiants ended production after the '69 model year.
Hopefully, it was a 4 speed O/D car instead of a 3 speed floor shift car, but either would be cool in my book especially if it was pretty much rust free!