Yeah the vacuum rule will put a TTA out,other thanthat it seems like a great class, can see a TTA easily running 11.80's or better with these rules.
One thing though,scince most of,if not all of these cars are street cars might I suggest following IHRA rules as far as rollcages which should be needed for 11.49 and quicker cars,rather than 11.99.I'd love to grab one of my cars out of the garage and compete with a few bolt on's,but would not be willing to throw a cage in an 11.70-11.90 car,especilly scince it is not my primary race car.Just a thought.
On a different subject,Mike I'm sorry I havent gotten back to you on the subframe but my computer has been messed up lately(I realised the hard way that I should stick to modding cars).Anyway I havent been able t find my old subframe,it may hve been thrown out but either way it's to cold to look for it.If you want I can send you the weight and any other info,pics,installed pics,ect of the tbular subframe.Let me know.
Steve
