[aggie91]

Here is what I found for a 1977 Chevrolet Suburban, 11.15 x 2.75 brakes...

Drum Brake Hardware:
Raybestos H7046
Dorman HW7046

Adjustiong Screw Assembly
Raybestos H1544 left
Dorman HW1544 left
Raybestos H1545 right
Dorman HW1545 right

Drum
Raybestos 2083R or 2083

Wheel Cylinder
Raybestos WC37048

Brake Shoes
Wagner PAB450R
Raybestos 450PG

Spring Hold Down Top Cup (part of the hardware kit)
Raybestos H1133K

Spring Hold Down Bottom Cup (part of the hardware kit)
Raybestos H1129

I do not believe that this is ALL the parts in the drawing BACKYARD88 posted. I think that it is only the replacement/rebuild parts. Items 7, 12, 14, 15 and 39 (form the drawing), I cannot find part numbers for them...I did not look real hard...