ProTech Underbody/Top Mount Box 18X18X48 Drop Smooth Drop Door Style Bright Aluminum Model 20-2270 Truck Bed Cover but you may need this

but you may need this part to retrofit to an older Pro II rack or to replace on your Pro Rack

1 1997 GMC Sonoma 73

3500 Model 415098-401475

welded steel construction

It is designed to be a custom-fit trailer hitch for certain years of the Ram 2500 or 3500 and Dodge Ram 1500

ProTech Underbody/Top Mount Box 18X18X48 Drop Smooth Drop Door Style Bright Aluminum Model 20-2270 Truck Bed Cover but you may need thisProTech Underbody Top Mount Box 18X18X48 Drop Smooth Drop Door Style Bright Aluminum Model 20 2270 ProTech Underbody Top Mount Boxes Secure, Weather Resistant, and Built to Last. ProTech Storage Boxes are engineered to provide unparalleled security and weather resistance. Designed for mounting on top of flat surfaces, these rugged boxes are as tough as the job demands. Dimensions: 18in H x 18in D x 48in L Secure storage to protect your tools and