Suspension and fabrication work like what?? GXP uses Bilstien struts and they fit the 97-03 Wbodies just fine. Most people that do that notice the obvious the car will sit higher due to the different spring rate than say a GTP. Zero mods need to be done to the shell. Cradle engine trans, suspension, CV shafts, brakes, seats, would all bolt right in a 97-03 Wbody. The most difficult part work be wiring and tuning. Which I wouldnt even attempt the swap unless I had an entire wrecked GXP to use as parts. Ill bet given a wrecked GXP and a Shell this swap could be done with out a welder.
