Towing 4-wheels down.....braking required for vehicle?

Thanks for all the info. Using the surge brake from NSA as well as breakaway cable in case the worst happens. Fortunately, the aftermarket metal front bumper with winch and D-hooks can be used instead of a Blue Ox mounting bracket which saves some $$. All in all, converting to 4-down isn't costing me the price I received selling my tow dolly.