Holman Electrical Contractor Van Package - GM 155" Wheelbase Model 53GMLHolman Electrical Contractor Van Package GM 155" Wheelbase Model 53GML Holman Van Interior Packages take the guess work out of where to begin uplifting your cargo van. With their strong easily adjustable shelving, partitions and accessories, their van packages have everything you need to put your van to work. Their professional designers and product engineers have created customized van packages for specific service categories to help you easily