318 to stock 340 power level questions.

moper said
Factory didnt, but the Engine Quest Magnums are about as close as you can get. Thier bigger brother would be the RHS magnums.

That was my next question. Do those head have pre-magnum intake bolt provisions?

Those would allready have the valve size and spring pocket machined, correct?

Are those cost effective and would you end up with a better head rather than sinking all that cash/effort into a 318 head?