Oh, I'm sorry, I seen "Stock head" and flubbed it. They flow around 200 - 21`0 cfm-ish area. The LD-340 & stock 340 cam and the headers should get you about 320+ HP.
Getting a slightly upgraded cam like the Lunati mention can net another 10 - 15 HP. I can see a very well tuned set up like this in the 330 - 340 HP area. This should be a great jump in power over the 318 while maintaining a excellent drivable car.
