D&D BOARZILLA FLH/FLT 07 BLACK 503-31B
Source: Custom Chrome
Introducing the Boarzilla from D&D, designed to make monster motors breath! They were designed in the dyno room with the goal of getting the ultimate horsepower and smoothest torque curve out of big inch engines. D&D accomplished this by using their award winning two-into-one Fat Cat configuration but with the added benefit of larger diameter headpipes.