what should i run in the 1/4?

I'm getting the blueprint engines 408" 375 hp 460 ft lbs motor to go in my 69 valiant. The rest of the combo is 727 3000 stall and dana 60 with 3.54 gears. I'm not sure what the weight of the car is, the reg. says 3600 lbs but i'm not sure. The car is originally a 273 with air conditioning. I removed the ac and i really don't think it's that heavy. Let's say the car ends up 3500 lbs and these motors may end up around 385 hp. My goal is to run in the 12's, what do you guys think with your experience?