All the NA's hitting sub 15's are at least stage III, maybe a pulley too, and have sub 2.1 60' times. And they're mostly all 5-speeds with aggressive launches. My 14.2 @ 95 was with a 60' time of 1.999 and it was 34 degrees out. With the auto and it's stock torque converter, you're SOL. It's just not gonna launch any harder. BUT, the key is that you're hitting 90 mph. THAT's GOOD! At stage II, that's the right amount of power. If anything, just get better tires.