I second Jim Testa, I was using his chips last year and he got me to 10.6 at almost 126mph before I ran out of fuel w/55's.
Also Eric at Turbotweak, I have some chips from him now for the 83's I went with and though I havent been to the track yet there are some neat features in the chips and run extreamly well. I hope to go considerably quicker this year.
Steve