This is the last 87 Callaway B2K Twin Turbo built. It did hot feature NACA ducts like the rest of the 87's. This car has the additional option 100+ engine package. Supposedly only six 100+ B2K Twin Turbo cars were built across all years. This car also features the a very early production Callaway Aerobody as can be seen by the higher location of the rear tail lights. It also features center exhaust and period correct BBS wheels. From the David Johnson collection.