America - Front
America - Back
Type these in at the naming files screen while holding Z and pressing with L:
Debug Mode- RRDEBUG
Dual Controller- RRDUAL
Invincibility- RRJABBA
Mirror- RRTHEBEAST
After typing them in start the race and pause, then on the D-pad push:
Debug- Left, Down, Right, Up
Invincibility- Left, Down, Right Up
NOTE: Mirror and Dual Controller just need the code, Dual setting uses ports #1 and 3.