Yes, that is the Bendix type that I have, mine is about 14" - 16" in total length and I have no problems with braking on my 2 ton with six wheel cylinders. The 2.5 ton trucks used a larger diameter but same design, I think the vacuum can on those is 9" diameter. I don't know if the hydraulic cylinder is larger for the bigger trucks.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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