Toying with the idea of replacing my seat covers with a leather option, but was wondering if anyone has found somebody that makes the OEM cloth seat covers.

I've looked and have come up empty.

 

We use a local upholsterer and they're good at matching factory materials. They did an S30 for us a couple months ago and I couldn't tell from original even down to the metallic vents. That said, just check a reputable shop near you.

 

I have been told that the center section weave pattern on the cloth 350Z seats is un-obtainium. You won't be able to find an exact match of that material. But that's what my upholstery guy told me when I had the seat pan foam repaired. Maybe it does exist out there, but could be hard to source in the US. Anyway, I think that's your best option, have some replacements made by a local shop. You can customize them to your liking that way.
Cheers!
-Icer

 

The middle section of my seats are fine, it's the driver's side side bolter that is janky.

I like the cloth seats, but leather feels SOOOOO good.