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