This is a sure way to get the rule changed - and I apologize to those that are thinking the same thing - but the new rule states:
Seats with a back not attached to the main roll hoop or its cross bracing may not be mounted to the stock runners unless they are the FIA homologated seats specified in an FIA homologated race car.
Notice my bolded part. There's nothing prohibiting non-stock runners/sliders from being used. I'm I'm just getting a major giggle about the "FIA homologated race car" part...
Yeah, I want to know the back story on this, too. I'm guessing it's because of someone being a d**k.
GA