I won't want the IRS, it's proven to be no faster and those cars are classed the same in SCCA plus they're newer and out of my price range.
A Thunderchicken though?? No thanks, those cars are pigs though I raced one once in my turbo laser and lost by a hair, they're quick in the straight at least, and we all know how factory adjustable suspensions good for the track as you never see a car with them.