Sorry another 408 hp guesstimate (choosing Fitech system)

Thanks I appreciate all input. The main reason I was looking at the efi systems was the easy tuneing and drivability.
When i used to live in Victoria BC @ sea level, tuning my carb on my old duster was easy. Did it once. Left it alone, ran great forever.
Now living in Calgary @ 3000+ft it's more of a pain in the ***, and constantly changing tunes.
Anyways if these efi systems are not right for my set up. I'll just stick with carb, I know a lot more about them, then fuel injection. Lol.