HI David,
This is probably not a rumor but I think this may have sporned from the shelby fest where the LS series powered cars were in a class of there own.
The national classes are fixed and will not change from previous years.
I was at the shelby fest and had a absolute ball, however I did find the new class weird and if anything diminished the "competition".
I will jump in and have a go, I am not sure the exact reasoning for the new class however I assume it has something to do with cost and the obvious modern technology giving the owners an edge over the old school small blocks.
I think there will be a push to change it for next year, I hope it doesn't and will argue against as it is stupid, maybe changing the rules to make it easier for some to win.
I welcome the chance to complete against these engines, I just hope they last the distance
Phil