Napa tells me that they have no part # for a 63 GMC sub 4x4 for front hardware kit. The front spring and hold down kit is quite different on my sub. This is the problem. Turns out there are also 2 different cyclinders listed as well. The 1st set were wrong and I am waiting for the right ones......One for the right from Toronto and the left from somewhere in Alabama. Complicated.
I will check with Napa US and get them to run your #'s again.
Thanks for the info!!!
EB
