All I can say is avoid Pacesetter like it was a bad habit.
And Second, Before you can even buy a header, you should ask yourself what difference in your power band do you want?
If you are seeking just a pure all out power increase, then seek a short 4-1 header.
If you are seeking a more broad power band with a solid low to mid range increase, then seek a longer try-y (4-2-1) header.
BigMike