South Park Rally cheats and cheat codes for Nintendo 64

Speech Test:
Finish championship mode.

Unlock all cars, tracks and skins:
Finish championship mode without using any tokens

Unlock Random Checkpoints and Speech Test options:
Finish championship mode once.

Cheat Sheet option
Win 1st place on the Rally Days 1 race, but do not pick up anything.

Unlock all outfits:
Play on the Valentine's Day race, and find the 3 secret pick ups. 
You can find two pick-ups at the towers. The 3rd one is behind the 
Skater picture.

Race with various characters:

Play with Satan
Win 1st place in the New Year's Eve race.

Play with Shelly
Win 1st place in the Valentine's Day race.

Play with Mr. Mackey
Win 1st place in the Spring Cleaning race.

Play with Jesus
Win 1st place in the Christmas race.

Play with Mephisto
Win 1st place in the Independence Day race.

Play with Grandpa
Win 1st place in the Halloween race.

Play with Big Gay Al
Win 1st place in the Pink Lemonade race.

Play with Damian
Win 1st place in the New Year's Eve race and touch the touch 
the millennium key alone.

Play with Death
Dropping off 4 candies at a time, win 1st place in the race Halloween race.

Play with Bebe
Lose the Cowdays race. Do no collect any health pack.

Play with Cartman Cop
Play on the Read-A-Book Day race. Hit Chicken Lover 5 times with the 
salty balls.

Play with Ike
Find the secret pick-up in the Memorial Day race. 

Play with Mr. Garrison
Activate all 4 checkpoints on the Rally Days 2 race.

Play with Ned
Pick up 13 turbo pick-ups in the Independence Day race.

Play with Pip
Ativate only the following checkpoints on the Rally Days 2 race: 1 and 4

Play with Scuzzlebutt
Find a Phillip Phart at the waterfall on the Easter Egg Hunt race.

Play with Sheila Broflovski
Find the Pot Pie on the Easter Egg Hunt race.
(You can find next to the building)

Play with Starvin Marvin
Lose the Thanksgiving race. Do not pick up any turkeys.

Play with Terrance and Phillip
Find the 4 pick-ups item in the Christmas race.

Play with Tweak
Pick up 5 caffeine item in the Spring Cleaning race.