Leave the blower/TB alone, the TB will require an in car tune.
Gen V does not cost $500, unless you throw your stock TB back on, which is pointless IMO.
Like I said in other thread: you can not do emissions compliant headers for $200, by the time you pay shipping and duty you're near $280. Quality cat is $200. Replace flex and its another $30-50 for the piece. The flex leaks right out of the box.
If you or one of your buddies can't weld, then you'll probably pay around $80-150 to have those two pieces installed.
Agreed on DHP PCM. Agreed on rockers as well. Suggest 105's or L76 springs instead though.