Do you run them on both ends or just the back? Also what are you running for springs? Mines lowered right now so I need something better then that for a drag racing application. I was thinking of putting the stock springs back in or is going w/ a drag race spring a better option? You went to 185's from 165's for your heads didn't you? I know what you mean when you have expectations and things just dont work out right. After my new combo was on I was running 105 and 106 MPH after a previous best of 108 but come to find out my fuel pressure was way to high. Good luck this weekend Id like to see how you do.