The rules are never official until the entries are released. I am working on finishing and releasing them this weekend.
They will be announced on a thread here.

We love the Munchkin..and have been proud to have them run with us over the past 11 years.

I will say this...I love the traditional conventional midgets also..

Steps are being taken to to enhance the competition between all the cars. Rules have been changed RARELY over the years in the Rumble Series. Every decade or so..the time comes for adjustment.

Best,
Tony Barhorst
rumbleseries.com