Yep. It's a very nice piece if not a little expensive. The Supercharger store equivalent is slightly cheaper. There is very little difference in the design apart from Chris's has a two piece case and the Supercharger Store has a three piece case.
Brackets, three or four belts and pulleys could cost quite a bit. May be not $3000 but just think of the parasitic loss you'd be saving not to mention the absence of crank side load!