picked up a drum booster today

[apachedaddy]

I went and picked up a bunch of parts from a friend that had a rolled over 66 c-10 GMC. One of the items was this drum booster and bracket that was still on the truck. Is there any way to test this thing befor i go through with installing it?? The only reason i ask is because this thing has been sitting for about 10 years. Is there a diff between a regular drum and a power drum master cyl. My manual master does not have a bolt in the end or a bleeder looking type of nipple on the top like the manual cyl does. The master cyl on the boster now is full of rust and junk is why i ask. The manual one works just fine.