Purple Shaft vs XE Comp Cam

You are going from a 3.91 gear to a 3.23????then you don't want a bigger cam.
Did you ever run your car with slicks at the track???
If you have not, then get slicks first so you can dump the cluck at a higher rpm and improve your 60 foot times.
The second thing i would do is run a bigger tire, if you can, instead of going to a taller gear.
Find out how fast your car is before you change anything.:rolleyes: