II:
As my memory breaks off the crust and cobb webs, I think you have it correct. I have seen 04 and newer GPs that are GTs with the "2" VIN code which was the N/A 3.8.
After reading more last night, I am thinking that the gearset itself is a 3.29 ratio, and that the 2.93 is the effective ratio when in OD.
Don