The Hydrovac on my truck is a Bendix, single piston, 6.75". The tag on it says it's a 374000, I used that info when I emailed Midwest Power Brake Products, Inc. I used the email "[email protected]" and they got back with me right away. The kit had all of the soft parts and a couple of hard parts-everything was correct. They can also sleave the hydraulic cylinder with stainless if needed.

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