Seat cover set: from Mac's Antique Auto Parts: https://www.macsautoparts.com/ford_model_a/
Boxed cushion without piping https://artisanupholstery.ca/2016/01/13/diy-easy-boxed-cushion-without-piping/
Listing wire to spring bed http://www.nocturnaloner.net/Seats/Bucket_seat_Upholstery_1A.htm
Can you sew with fishing line? https://sewingmachineclub.com/sewing-fishing-line/
Nice view of different types of Bonnie Grey seats: https://www.google.com/search?q=upholstery+1929+ford+model+bonnie+grey+upholstery&newwindow=1&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj99Y2sut_sAhXPJt8KHXuMBi8Q_AUoAnoECAwQBA&biw=1233&bih=567#imgrc=-GbbuBkMz9v0CM&imgdii=t_AGPHBFvst-QM
Rigid and Flexible listing wire: https://www.youtube.com/watch?v=uEz1O7cp-_o
Nice grey seats with piping http://topclassiccarsforsale.com/ford/96305-1930-ford-model-a-tudor-sedan-1928-1929-1931-1932-hot-rat-rod-coupe.html
NIce looking seats, No piping....ladder stitch? see close up of upholstery: http://significantcars.com/cars/1927ford2/
Lots of visuals on attachment: http://transamcountry.com/community/index.php?topic=1441.0
Bolster wire attachment with zip ties, then hog rings: using blue jean material and wire hangers for attachment (listing wires) make sure to surge (?) top of listing wire to fabric: https://www.chevelles.com/threads/bucket-seats-bottom-bolster-listing-wire-question.271864/
Sailrite: fixing french seams with good visual of ladder stitch in leather https://www.youtube.com/watch?v=dGIEkN7A7Kg
Sailrite: Selecting the right thread https://www.sailrite.com/Selecting-the-Right-Thread-Material
Max's auto parts: Ford Model A upholstery kit: https://www.macsautoparts.com/ford_model_a/