I would like some help choosing heads for a stock bottom end 302. I'm ready to purchase a set of heads that will work on a future 347 build. I was looking at afr 185s but don't want to deal with ptv clearance issues. I have been told by a rep at trick flow that their 190cc trick flow twisted wedge design part #TFS-51400015 would clear pistons. Will these heads work with a stock bottom end 302 and ford b-cam? Will I lose bottom end hp because of their 64cc combustion chamber. Custom grind cam not a option at moment as I am saving for 347 build. Just want to get more out of my current set up. Please help me stock e7s gotta go. Engine specs in sig thanks!