i want a 12.5 1/4 mile time please help

[vande97]

OK here it is i have a 306 with about 1500 miles on it so it is pretty new, i have forged pistons and a good mild cam , total lift is 498, I am in the process of doing a efi to carb conversion, and i want to be able to run a 12.5 ( right around there) 1/4 mile N/A !
right now i have stock ported heads and also milled , compression is 10.5/1, I have also a set of slicks and am running 410 gears, it is a 5 speed tranz,(T5) , but basically i need to know what heads if i need them, and carb and intake would put me at that time, i plan on giving it a 150 shot also,

thanks