duster street/strip build

I have a 1970 duster that i am building as a street and strip car.The engine is a 360 magnum 390 horse crate engine with 1.7 roller rockers and a 750 holley double pumper carb 727 trans with 3000ish converter and a 8.75 rearend with 4:10 gears and the car has super stock springs and drag shocks and a pinion snubber.I am hoping the car will run close to a 12flat.I was wondering if anyone has a similiar combination to mine and what kind of times there getting with them.thanks