What else should I do

Heres the deal, I'm sick of my nitrous, I'm tried of the inconstistant runs and filling bottles, the broken parts dont help either. Anyway I'd like to be able to run 11.8 to 11.9 NA. I was running 11.1 to 11.2 on the bottle with a 125 shot and around 12.5 to 12.6 NA. So I'm wondering what I should do to get me to my 11.8 NA goal. I have 3.73 gears and I run 28x14.50 Hoosier QTPs so I'm thinking 4.10 or 4.30 should help alot, right now I have no traction problems. The rear end is built and my 60's are 1.5x. As far as my engine, current mods are VT forged short block with CP -9cc pistons, Patriot stage 2 heads, Comp 270's and springs, Mac longtubes/ catted H, Trick flow upper, 75 BBK TB, Steeda pullies and Catback, K&N FIPK. Car runs big and little Weld's and has a tublar K, and 8 point bar. Car is a 5 speed.

What changes/ additions do you guys suggest.