pleasure way seats on chevies are "stock" with seat covers made for PW by a local Saskatoon upholstery shop ( according to the label)
I'd suggest you find a local to you auto/marine seat shop
btw one of the best "mods" was replacing my seat bases with new durafoam from " the seat shop "
we just did a 5k trip and there were no complaints!
https://www.theseatshop.com/
mike