For decades Legendary Auto Upholstery seems the best quality, with fewest complaints, from my personal use in 4 vehicles, all Darts, and being able to compare another, cheaper manufacturer, side by side, - and the quality difference was night and day. The cheaper manufacturer "stitching " was terrible, and after a summer of summer-heat the driver "seat" was badly sagged/stretched by my 160 lb son.
There are lots a similar posts here, a quick search may get you pinpoint results.
Good Luck.
P.S . .the wait time is long, so order early, very early, the wait will be worth the quality .
They also often sales, Xmas usually being 20/25%ish.