all applications". There are certain road racing tracks that the 4.10s would allow you to just eat up; there are also tracks that might result in overall increased times. I am still investigating what turbo set ups (ie. bigger laggier turbos) would benefit from 1/4 mile performance and which ones would increase ET. I plan on running them in Seb's, Zo's, and Dean's Zs to see the affect on 1/4 mile performance. The big question for the drag strip, is whether they benefit or hurt larger, laggier turbos (with 5 speeds). I think it's been proven that they are a spectacular addition to any properly set up auto.....from stock to highly modified. The high horsepower 5 speeds are still a question mark. Stay tuned, Mark