Use quest mode and get to Sega Are
Upton stage to unlock them.  Now HOLD Start at the versus mode
select screen when picking a stage to make it the original version
Training Stages
Get the training stages by reaching the
following areas in quest mode.  Then go to the versus mode screen
and press Left or Right to get the training stage.
Training Stage #1 - Reach Club
Sega Bay Area in quest mode
Training Stage #2 - Reach Sega
World South in quest mode
Training Stage #3 - Reach Club
Sega Plant Area in quest mode
Training Stage #4 - Reach Sega
Area Midtown in quest mode