So I have read several posts on this question and just wanted to post my feedback as of this afternoon ?. On my Sunday afternoon cruise I found myself on a nice little country stretch and made a few pulls. Stock 3:27 gear, with a few bolt ons and bama tune, she ran 105 in 3rd (just over 6k), i let off in 4th right about 120ish (around 4800-4900rpm). She was still pulling hard, but i lost my nerve about then?. Given that, I think 135-140 is very realistic out of our cars.
Feedback is welcome, I have jus always wondered what they will top out at.