The stop bolts are for speed shifting-drag racing-so that you don't break the shift forks. I installed my Hurst with no bolts,no springs,and the stock knob,and I have no problems with noise or vibration. Then I did the anti-venom mod with a 1.5 mm washer to reduce shift effort. Most guys seem to use about twice that-around .1"-it's a matter of personal taste.thanks jub jub... i think i might give this mod a try. i tried using dynamat, and that stuff almost totally eliminates the noise... UNTIL it rips. it's not made for moving parts.
anyway, i am worried about removing those stop bolts. so, there are not problems at all with removing them, when using the hurst on a z06 transmission? why were they even there in the first place then?