The Vintage Air setup needs a little tweaking to make it all work. Never done Classic's. In either case, trying to find an get decent factory stuff is simply not worth the cost or time. Not when you can get all updated stuff for less that doesnt require more than a couple drilled holes for bolts. I just did a March single serp drive setup, a new tiny compressor, and the Vintage Air setup. Even not using the serp drive, it would have ben much easier than fitting factory stuff, and that's before having to find and pay for good factory stuff.