If you have the make and model number it should be no problem tracking down the parts for the bed, cutting jet or, the computer cab.
There should be a parts list for the bed and cab.
Cutting heads/ jets. Hydraulic, valve ram replacements.
Cab expansion rack and mounts.
Should be a part order list for each component, with the bed or the computer cab for addition or expansion.
Extra hard drive rail expansion bays.
Your going to have to go on the brand and model name. on the bed or the cab.