The 4.30s will only help if the car hooks. If you can get the car in the 1.40s (sixty foot) and keep it in fourth going through the traps, you might run 11.50s.
Oh it hooks good. Good enough to break one of my axles with the 3.73's in it. My best 60ft was the pass rite before it broke with a 1.58. That is why I'm going with a spool, 4.30's and 31 spline. Getting under 11.5 is my goal this year. If I find myself to high in rpm's in 4th I will just put some 28" tires on. We shall see. Hopefully next week I will be putting er back together.