Wanting to order new carpet and seat upholstery for this 1991.
Is this grey or silver (only 2 choices on ACC)

Also would like new drivers seat foam, and does katzkin make decent leather seat covers for these seats?
Or whom would you recommend?

 

I'm impressed by the condition of your build sheet.

The name of Pontiac's 85-92 factory interior grey is called Medium Dark Grey. ACC considers color 877, which I think is called Dove Grey, as it's standard replacement color. 877 isn't listed on some sites that sell ACC, so if you don't see it on the list, then contact them and ask for it.

No experience with Katzkin, other than knowing they're pretty expensive. But if they make seat covers for 3rdgens, then I'd think they'd be nice. They have a huge selection of leathers, and they offer A LOT of different greys, many very similar to each other, so you'd have to ask for several samples if trying to match the factory grey leather.

 

You can call or e-mail ACC directly, as they have numerous more colors than shown on their website, as mentioned.
You can also find some of your old carpet that's hidden and not sun-faded or worn, and send them a swatch to match, then they'll send you a swatch of the closest color they have.