You're better off stock, than with the Tokico's unless you find a set of "Rallye's" They're the only tokico shocks that are stiffer than the factory R struts. GAB's are a better alternative, but are hard to find.

In all honesty, you don't need shocks on an ITR to win in DS. I was a top 10 finisher at Nats in '00 and '01 with stock shocks and the car was good enough for the top 5 each year if someone a little less mistake prone was driving. David Fauth and Kevin McCormick would agree the stock shocks are really good and unless you're a tenth or two from that national championship probably won't provide the difference you're looking for. Also be advised that many aftermarket shocks for the R (especially rear ones) are actually softer than the factory.

Just my $.02