what else is needed for eleven second 340

I have now

340 crank
refurb stock rods with KB pistons im told they should be should be around 10.5:1.
complete assembly is balanced

Im getting performer rpm heads.....should i get the 340 or 360 head?

What cam/converter/gear would do this? I have access to some 4.56's but the car currently has 3.91 gears. Car weighs 3100 with me in in it.