WSBK and BSB. How close to stock are they really? I know they don't run lights and such but compared to a "stock" bike, the ones we ride every day, just how close are they? Do they go inside and do things like change cams and such or are they tied to a stock block and head? I know they change up the wheels, brakes and at least tweak or change suspension but is that it? I know there will always be that gap between the race track and the show room floor but I've noticed over the last 20 yrs. or so that gap has closed some. For me, it's sometimes difficult to convince myself that I'm not riding a race bike around when I'm out on my 10R.