I bought a mess of parts the other day, and it included a brake booster. it has been rattlecanned black, and it was black originally, I guess. Anyways, the only #'s I could find on it were "6 188 B 10842". What the heck does all that mean, and is this thing even off of a Corvette....if so, what year? I can't find any info in any of my books......Thanks ahead of time!