W1cked did 1194 on nitrous and in the 800's on diesel only. . He runs a stock head, valves, springs, and cam. . Just good studs. .
Nope. . Just stock springs. . I turned my stock CR to 3930 rpm on the dyno with stock springs as well. . I also run it at the track often. He used to run springs, valves, ported head, cam etc, but he said he had better luck with the stock parts. So that's what he has now. .