Quote Originally Posted by StephenB View Post
We are allowed to do anything to the rear end which is within the philosophy of the class, this allowance just makes those modifications we are allowed to do more reliable.
Who said you "are allowed to do anything to the rear end?" That's not true. 9.1.3.D.4 lists the only modifications that can be made to the final drive. If you could do "anything", it would say so. But it doesn't. It says that you can change the final drive ratio, and that you can replace the differential. You can't do anything else, it's that simple.

The philosophy of the class is limited modifications, and moreso, only limited modifications, only those listed. It is NOT the philosophy of the class to find unlisted modifications that are somehow similar to those listed, and claim that those are (or ought to be) legal too.