Man I'm loosing it!
Thanks guys.
I should have known better considering I almost purchased a new left-over 2100 series back in 2005, that had a Briggs Vanguard 18hp V-twin in it. It was a 2004 model year. The only reason I didn't get it, is it had a 42" deck. I really wanted a 3-blade 44-48" at the time.
Anyhoo, glad you got the filter thing worked out. I know many of the Briggs twins have the filter mounted at an angle that might interfere with stuff if you wanted a larger filter like the Motorcraft FL400's I usually recommend for Kohler V-twins.
Joel