Edelbrock / RHS heads, or go BIG block and put it to bed!
I would highly recommend a holley 750DP carb...it makes more avg. power and better peaks as well.
The RHS heads will get you where you want to be, the carb can be added later.
I always suggest guys work work work that chassis! We race cars not engines, so the better the chassis (launch) the better the car will e.t. with the same power.
My car is a perfect example. Even with only 460 or so HP it ran 6.94 in the 1/8 at 3350lbs. with a 1.42 60ft. That was with a 3500stall Hughes converter and foot braking too.
It did make alot of TQ though...the 60ft. made that e.t. SHINE!!
Brian