An updated copy of the rule book has been posted to the web site.
D30 or the Diesel 4×4 pickup class 3.0 – Turbocharger: The vehicle is limited to a 3-inch slick bore without map ring. All provisions allowing the air into the wheel other than via bore is prohibited. The vehicle driver will be responsible for making compressor wheel accessible for tech personnel to measure bore. No removable plugs or reducers allowed to reduce to legal spec.
Pre-entry – number of missed events to still qualify has been updated