10HP, maybe 15HP if you had other supporting mods. (intake, exhaust, chip)
Add another 10HP for the SVT cams if they are included in the "SVT heads" part.
The SVT UIM, RLIM, and SVT TB are all good upgrades after you have intake & exhaust.
I'd skip the heads & save the cams for when you upgrade to a 3L engine.
