I got my clutch for my 54 from a local shop ,it was hard for them to get but I think I found rock auto had them also ,Not even sure if mine is 11 inch as it was a while ago I got it but I will look as the box is still there with the old one .Here is rock autos
Attachments
IMG_4685.png (1.03 MB, 112 downloads)

1954 Canadian GMC 9300
"The Journey"
Follow in the DITY