I don't know about fastest but I consisantly run around 119 MPH with a best ET of 11.42 with Steve's kit. Out of the box w/ single nozzle. My mix is 70% denatured and 30% menthanol.
I am installing Steve's dual nozzle on my GN this spring. That car has gone 10.95 with C16. Given the success with the Ltd which is so mildly modified, I expect the GN to do at least as well as with the C16 if not better.
I'm taking the Ltd to Norwalk this year for those that may be interested in checking it out.
Hank