I need to replace the rear valve cover on my 2001 Spyder GT. I have the 3.0L SOHC V6. Are the valve covers from the other V6 models interchangable? Also, since I am trying to hunt one down at a salvage yard, does anyone know if the valve cover from other models of cars and years are interchangable with mine? I know various versions of the 6G72 engine were used in many cars, just don't know what might be interchangable. Since this is the one that is hidden under the plenum, if it comes from another model car, I would be OK with it. I would appreciate anyone's help.