There is good advise in this thread. I will add a couple of observations.
If you are going to leave on yellow, it will be necessary to stage shallow. the quickest the car will be is staged as shallow as possible and a 0.0x RT. Easier said than done for some. Like me, for instance.
Like Scoobum, I am a big fan of video when tuning the chassis. I want a white line on the rear tire or big white letters (think Hoosier). I prefer the pass side from the side and lasting for 60+ft. Cell phone video is almost instant feedback.
In this thread there is a picture shortly after the hit and a picture of the car at rest in the staging lanes. From these two pictures I believe your car has oem control arm location with negative rear body separation. It is also possible the front shocks are able to hit their extension limit. Standard G-body stuff. The drag performance could be improved w/time-money, but all street strip cars are a compromise. Guess who decides how much.
The car is certainly capable of running well into the 6's (10's) now. Depending on the weight, it is making some steam. Looks do not hurt either.
