Fuel system issues

ok so was messing with the dart today! i installed the holley red pump that MARK ETHERIDGE (MadMax/6) sent for an Xmas present!

anyways... i up jetted like at the track (69/75) and removed the air cleaner and went for a ride...

well instead of it starting at 5400 it is now at 5800 in second, nothing in first...

so i borrowed my bosses remote fuel pressure gauge, drilled the rail out to 15/64's (there wasn't enough meat for 5/16) and drilled the fuel inlets to 5/16. lastly the 3/8 inlet is only a 5/16 so i think that might be the issue... so im looking into a new rail...

so i went for another cruize...

so with the engine off the pressure was 6psi steady
with running it was about 8psi
driving down the road normally it was from 8-9psi
on full throttle run it went from 9 down to 6 at the launch, then back up to 8, i short shifted 1st cuz i was focused on the fuel gauge, in second it dropped to about 5 or 5.5 in the middle of second and slowly climbed till i shifted again where it was around 7 again...

sorry for the long post lol... but im gonna look into a new fuel rail and should be done with the issue...

here is the rail i was looking at...

http://www.summitracing.com/parts/SUM-220106-B/