2v 4.6 GT

Any 2v ppl out there? What is a good 60ft time for a street car ? I'm pulling 2.0 right now but should i be expecting say 1.8 with 315 tires,4:10 gears, lowered, with bolt ons? should i get some drag shocks or further suspension mods to hit 1.8?

I had a 99 cobra, with full qa1 suspension, 4:10 gears with drag radials that hit 1.9 60ft, but my GT has the stock auto trans so i cant launch at a high rpm.