11/9/2020
Wisconsin wingLESS Sprints
Rule Update
![Rule Update](https://dy5vgx5yyjho5.cloudfront.net/images/v2/s1136x640-xU57gKiJ6O4p9x606650.jpg)
?To clarify, regarding the GM604, the GM #19318604 or #88958604 are the two GM part numbers. The engine can NOT be modified or altered in any way. All parts must be OEM to the engine without any grin...