Which Intake valve?

Going together with a new mill for my 3/4 dodge. I will be driving regularly, towing 8k-9k. 408 cu.in. 9.5:1, 230/234@ .050, aprox. .495 lift, 112 lobe sep. 518 trans. I already have 2 sets of 915 heads done, One has the 1.88 intake the other has the 2.02. The truck will never see anything over 6000 rpm. Just like to get your opinions. Based on theory or experience. Thanks