So I was going through RPO codes yesterday evening, and I found out some interesting stuff. My car is a sedan with the F41 Firm Ride and Handling Package. It also has land-speed record gearing (2.21s, IIRC), and an open diff (sad face). However, it is pretty cool that it has the F41 pack. Next up after a dual-snorkel air cleaner is a G80 and 2.73s!