340 Head/Cam upgrade before vs after with results

Think you would have picked up much with a 750 DP? I would think a cam with that duration would respond to more carb. I'm also curious if you think a solid roller would be worth the investment in this case. I imagine you would be able to get same lift with less duration, or more lift with same duration, pickup some extra horsepower? I wonder if an intake change would be worth it as well. Hmmm

What static/dynamic compression did you end up at with the new heads/cam?

Inquiring minds. As I'm thinking of having my J heads ported into the 260 range and going with a solid roller this winter.