conversion

For a 2005 Savana 1500 with the Explorer Package, I just got this vehicle and wanted to start out on the "right foot" so to speak. :D . The front tires are Goodyear Fortera HL 265/50/R20SL and are in decent shape. The rear are mismatched but both are 265/50/R20XL. The van seems to be a little...

I have a "92 SLE 8ft bed and love the stepside look. Can I fit the bed on as-is or do I need to alter/replace anything. The original bed is trashed and needs replacing anyway so I thought I'd make it how I like it.