Need the white vinyl or white vinyl covered seat to replace my original and ripped white vinyl driver's seat.

If you can find a white back pad in good enough shape, you can use material from it to have an upholstery shop repair the seat side bolster tears. Behind the seats is usually the best & least sun damaged, but it will all be 30+ year old vinyl & stiffer & more brittle than when new.. I have to do that with my Beige interior too, cuz the original stuff is NLA & the current aftermarket vinyls don't match the OEM stuff.

If it's into the basketweave, then you may be SOL & have to d o full repro reupholstery (IIRC you're doing a CW resto). If my plan doesn't work out, then I'll have to do the whole 9 yards too.

If that, look online for Autos International in Vista/Escondido & World Upholstery in Ojay & they'll send you samples by online request. Both do excellent P-car interior resto's & advertise in the PCA & Excellence magazines.

Good luck!