Power Drum Brake Questions

[goodemj]

I found the pictures I was looking for last night. The three push rods pictured are: (left) 72' 1/2 ton blazer MC with disc/drum with single diaphragm booster, (middle) fabricated rod for my application 69' 1/2 ton pickup MC drum/drum with 72' one ton pickup dual diaphragm booster, (right) factory rod for 72' one ton pickup MC disc/drum with dual diaphragm booster. The 72' one ton booster requires a deeper push rod if being used with a drum/drum MC since they only came with disc/drum MCs which have a shallower depth for the pushrod to enter. I still have a brand new 72' one ton MC disc/drum in the box collecting dust because I bought them as an assembly if anyone is interested?