You can not download SCORE's rule book, they get 25 green and thats the only way.

Go to www.bitd.com and there you can download the rule book.

The rules are close to the same. The class names are different. For example; Score has "Trophy Trucks", BitD has "Trick Trucks".

Score has stock mini and stock full for their stock classes.

Best in the Desert has the class broke down a little more, 3100=stock mid size SUV, 4100= stock full size SUV, 3000=unlimit SUV.

It breaks down the same way for P/U trucks.