The 1998 competition calendar. 4-cup competition which 3 best competition count.
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Competition groups for the next year are:
| Group I | (standard) |
| Group II | (modified) |
| Group III | (prototype) |
| Group IV | (trucks) |
| Group Classic | (sub-group for Group III) |

Photos are of last year Raision MudRace. Jukka Hyttinen and his MB-Kupla, Matti Lehtinen "Mudhead", Matti Lehtinen and his "ProStock" Mud Racer and ProStock "on the track".
See the 1999 & 1997 season and '97 results, and the cross-ref' pages