It all depends on what you are willing to live with,their are plenty of guys driving 9 second "streetcars" all over town and plenty of guys who cant stand anything more than 3.23s and a cam with more duration than your basic 270 comp.You can get a custom stall that will give you 3800 flash and still have some drivability but the car will be on the edge of truly streetable with 4.10s and a xe284,long cruises will not be so enjoyable.If your only looking to run in the mid to upper 12s you can do it with a milder combo and not give up so much streetability.