My warranty expired and I want to keep the car for another year....

I was thinking of doing s/c immediately, but i'm thinking it would be more enjoyable to do it parts at a time, not to mention financially beneficial. h:

So I can't choose between this upgrade for the winter. I am done suspension already:

-Comptech Exhaust (back to sq1 h: )
-Top Speed Header

or

-Comptech Exhaust
-UR Pullies

Which one would be better? Around same cost...