F1 World Grand Prix 2 [N64]
Select exhibition mode and choose "Williams" as a driver. Use the Analog-stick to change his first name to "Nostalgia". Alternately, successfully complete the extreme challenge with full points under challenge mode to unlock Jerez, the old European Grand Prix circuit.
7-speed transmission in Grand Prix mode:
Select single race mode and choose M. Schumacher or E. Irvine as a driver. Select a manual transmission. When the race begins, change gears until getting to 7th gear. Quit the race, and enter Grand Prix mode. Start or resume a season and any car you select will have a 7-speed transmission.