Sure, just rename the copy appropriately, and it should be visible. I'd suggest using the Shuttle-PB, however. You want to use the config from a vessel which is a plain VESSEL2 vessel, and the DG has a seperate .dll. Look for a vessel with no animations or 2D panel, etc. Otherwise you could have problems with missing meshgroups and textures, etc.
Not at home, but IIRC you need a config that doesn't contain a "Module" line, or has VESSEL2 listed as the module. The stock DG, for instance, has "Module - dg" or somesuch, and there is a .dll with the same name (dg.dll) in the modules directory somewhere.