Help me I.D. this Master Cylinder Please!

I bought this at a swap meet for 5 bucks! (see pictures)

Suspect it is the same as this?
http://www.ebay.com/itm/1968-70-ROADRUNN...c23&vxp=mtr

What does this fit on what makes/models?If it is the same as the E Bay listing; will this be compatible on my Bendix Hemi brake booster? Thanks.

It's a repo B body disc brake cars, '68-'69 disc hemi B bodies, and 1970 disc C bodies master cylinder. Fender side exit was normally hemi.