Your second to last picture I believe is your hydrovac. It's to boost pressure to your brakes. The last picture is your vacuum shift for your two speed rear end which is actuated by the valve on your shifter. Do you want to sell her yet?(LOL) Sharp truck, with the exception of some holes in the bumper,
Scott

BTW, after a few days go by and everyone has had a chance to see these pictures, you'll probably be asked to post a link the the pictures to help save this sites bandwidth. Just thought I would give a friendly warning,
Scott


Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!