On the turbo claimer rule, here is another thought, the reason, I like this, is it could transfer in to drag racing as well. The simple inducer limit is not enough. This is similar to the Carburetors in Comp, a stock appearing 750 so called econo carburetor can cost many thousands of dollars.
Pick a turbo frame that is common, and available to everyone, same compressor housing, same exhaust housing outlet. This is similar to the ASA heads in sprint car. In fact, get possibly Borg Warner to provide this out of the box turbo with its own part number. Anodize the compressor housing, and allow no removal of this anodizing.
All of these will be available only as a complete turbo. Now let the turbo guys go nuts with them, inside, do anything you want, but do not machine the anodizing off.
This turbo must have a serial number deeply engraved in the compressor housing, exhaust, and center housing. This limited motorsports turbo and its corresponding serial number will be documented, and these numbers will be available to sanction bodies.
Make the anodizing a very unusual,
Since the mounting parts both inlet, and outlets are exactly the same, they can be interchanged.
if anyone wants to protest, they can exchange their running turbo, off their truck for say $ 250, to $ 500.
They are interchangeable on the trucks, so it’s not hard to install the traded turbo on the other trucks.
One other part to this rule to this, and important, if the person suspects the other trucks turbo is damaged , the person challenged has the right to ask the sanction body officials to draw three separate randomly draw competitor at the event to inspect the turbo.
This would make a unified turbo for several classes, both pulling and drag racing.
Respectfully submitted as a non puller