No idea on what I had at the wheels, never measured. I was running stock turbo with custom TID, 13psi, 3" exhaust...I would guess 230-240whp. Tires were shitty old kumho's on stock rear wheels.
I had the launches pretty down with slipping the clutch around 4500-5000rpm. I honestly don't remember my best 60', I never got slips back then, didn't care
I just watched my et and MPH.
If you're serious about draggin though I would absolutely ditch the coil overs, they're not helping anything in a straight line.