My apologies if I misunderstood Punk. You said streetable and pump unleaded in your first post.
"I fail to see how increasing the average port flow in all used lift ranges by circa 30% could NOT cause a gain in net useable RPM and HP especially with a 114LSA cam. "
You're not increasing "all lift ranges by 30%". You have an average port flow increase that is just that - an average. And you have gains made at specific lifts - and those are not linear gains. Using published numbers (off the Shady Dell website) the gain at .100 is 5%. .200 is 11%. .300 is 12%. .400 is 15%. .500 is about 26%. That's a fairly typical improvement. Low lift flow is typically not enhanced when the port is designed to flow big at higher lifts. I stopped at .500 because the cam you chose will only lift the valve a max of about .490" when you remove the lash figure and the pushrod angularity. So increases over that will not be providing any help.
On the 114 LSA - Could you provide more info as to your thoughts on that particular choice?
Edit - also - the lower end you said is done... What piston and ring package was used?