[racer]

Interior door panels don't look right. They look "smooth" vs the basketweave later cars came with.
The extra "tits" on the front bumper were required for California and MD.. Could have been optioned on other states..

passenger door handle "bottom" is missing. Should look like a solid (non-opening pocket)

Aftermarket rocker panels (raised porsche lettering) be sure to check jackports and longitudinals

Black was not a very popular original 914 color by 75-76. I'd look for signs of a repaint.
A 1.7 is not original for a '76. 76 came only with a 2.0l

I assume the dash is cracked under that carpet cover?

Check all the seals (trunks, roof, windows) as some of these can be hard to replace, but importantly, they like to trap moisture. Check trunk panels for rust.

Rust at the back of the floor would make me look harder near by for more.

How was the battery tray and "hellhole" underneath?