Dissapointing performance

Hughes Super Prepped Edelbrocks with a few hours of hand blending in the bowls etc. Gaskets matched to an Airgap intake with the center plunuem cut out. It's fed by 49lbs Ford Racing injectors and a Hughes Big Gulp throttle body.

TTI step headers with a Full TTI 3" H-pipe exhaust with Hooker Aero Chambers and ovalized tips. It's quiet until you hit the throttle more than just cruising, then it gets loud! 3.91's, a 4 speed auto overdrive with a 3400 stall/ 3-carbon fiber disc - lock-up converter. It hooks up hard on the street using properly adjusted slapper bars and Nitto drag radials. Heck, it beat a Hellcat in a drag race a few months back.

It took over 10 years to dial my car in. It is a process, and it is still evolving. Keep at it and you will get it where you want it. My problem is that point keeps moving.
Sounds like you got very healthy engine.

I have also had this car long time 15 years and when I bought this it was almost stock 318 engine and that was really slow. So looking that I have made some progress, but problem is I constantly want more performance.