http://www.race-cars.net/calculators/et_calculator.html
580hp = 10.99448ET
580hp with only bolt-ons?
I don't understand. You are willing to go forced induction but you don't want to replace your internals. that doesn't make sense to me. lets see if its possible...
420hp stock
50hp cold air, LT's, full exhaust
20hp ignition
40hp cam(docile and streetable as it was stock)
______
550hp
550x.06=33hp/lb of psi
33hp x 7 psi = 231hp
550+231=781hp
after parasitic loss i think you'll be looking closer to 680-690 give or take
now dont quote me on these numbers they are all estimates.
with all this your car would rub sub-11s, but it would not be "docile" by any means, nor would it be streetable as stock(unless you were looking at a stock ZR1)