what to do for new heads

i have a 302 that i run i was running a stock windsor head 69 and i came across a ford racing x303 cam i put that in and well those heads didnt cut it i want to know what a good size head would be i have edelbrock performer intake stock totally refreshed bottom end 650 holley carb i ran low 13 want to go to atleast 12 flat and a grand to do it what would be best route to go for heads

i have a 302 that i run i was running a stock windsor head 69 and i came across a ford racing x303 cam i put that in and well those heads didnt cut it i want to know what a good size head would be i have edelbrock performer intake stock totally refreshed bottom end 650 holley carb i ran low 13 want to go to atleast 12 flat and a grand to do it what would be best route to go for heads

Thats a tall order to ask for a set of heads. Im not saying that it isn't possible. If you are running low 13's on your current set up a good set of heads get you close. And Im talking AFR's period. Even with AFR's you may need to research a better cam to put you at a 12 flat. JMO