Interesting. I'm running 3.55s and with my TVS I'm at the very top of 3rd at the end. So I'll either just run off the rev limiter or shift into 4th at the very end. Times pretty much stay the same. When are you shifting? What's your rev limiter?with my 3.55s im in the middle of 4th down the 1320' emay tells me 3.73 is the way to go but im thinking i might just go with the 4.10. even though the 4.10 would render my street tires useless.