for those of you who have done this setup of mods, how much of a hp/tq increase should i expect once they are installed.

intake
prj wires.
ngk tr6 plugs
180* t-stat
headers
cat back exhaust
ported throttle body
ported supercharger case
tuned pcm
3.4" pulley



also, is there any point to installing a tb heat sheild. and how hard is it to install and replace supercharger case.