Chevelleabration

So I am looking to upgrade the front drums on my 69 Chevelle from the 9" to the larger 11" or bigger if there was. I am certain that I will need the backing plates and maybe even the steering knuckles? I know that the full size models of the late sixty,and even the Scooby-Doo Chevy vans of the sixty had these breaks. Am willing to pay fair market value for parts. Please don't waste my,or your time by trying to sell me disks. Don't want them nor need them.. Gonna show the kids this summer at GoodGuys in Cols on the auto cross course that big drums will beat most stock disks, and just be different from the pack. Already have a machinist who is gonna do me billed wheel cylinders and ported & veined drums. I would love to find the big 3"wide drums off the 63 to 67 Corvettes. No Truck breaks. Please contact John at (six14) 5nine2-ninty4sixty5
​​​​​​​Thanks for any help.