No one but you cares how fast you're going on motor. The only thing that matters is turning on the win light.

I was like you are a few years ago...just got bored so I decided to step it up. I ran mine on motor for 8 years even though I intended on spraying it from the start. Now that I've run it for a while, I might as well sell my N/A torque converter b/c it'll never go back in the car.

I flew the N/A flag for a long time in the local street car classes, but eventually got tired of getting outrun by cars w/ way less motor and a little nitrous. You know how easy it is to run in the 5s w/ a little mild small block mustang and a 250 shot? I have a friend w/ a REALLY mild 383 sbc in a full interior fox body mustang street car. On an untuned 200 shot it goes low 6.20s. When I say mild 383, I mean you could put it in your tow truck and let your grandma drive it.
Like Monte said, a 6.anything 1/8 mile is first round fodder in street car stuff anymore unless you get real lucky. Unless you're high 4s or bottom 5s you don't have much of a chance really. Last street car shootout I ran in I got beat in the 2nd round by the eventual winner who runs 4.70s. There's at least 3 that always show up that run similar times.