Hey John, just wanted to add my two cents. Both SoCal and by Crazycrave made two very good points in my opinion, First running fast times, is not all about HP, suspension plays such a huge role in that (go back to some of my previous posts about my old non PI 4000lb. tbird that I broke into the 13's with, that was mostly because of drivetrain and suspension, it was still under 300hp at the crank). Second, before I got my GT last year, I kinda made the same comparison, with the old 289's and the 281 2v engines.
Expectation and goal does play a lot into it. I knew when I bought mine, how far I was willing to go, and roughly what I could expect. I did not expect that I would be beating LS's, Coyote's, or Hemi's. I bought this car, so that I can enjoy it, so that my family can enjoy it.
I am not mad that this car is not as fast as my old C5 ZL6 was, fact is, I really love this car for just what she is. I am currently putting my touches on her, and that will make her even more mine.
Way back when, I was a lot more focused on being the fastest and beating everyone. I spent A LOT of money and a lot of time always, fixing changing, improving. To be honest, I have friends that had 500-600+hp vehicles (Mustangs, Chevys, imports) blown, turbo'd, on nitrous. you name it. the truth is, that no matter how fast they got, they always wanted more (it really is never ending), and then we all wound up eventually getting bored and wanting something different.
Your New Edge is an AWESOME car, and you have made some really cool mods. they are not a dime a dozen and they marked the beginning of the comeback of the Mustang (much like the beginning of the original). Take pride buddy, and just enjoy the ride!
p.s. a decade ago (when I was last involved in this game) 400-600hp sounded a lot more impressive than it does today