an uncoated cat? or did you mean shorty header? i didnt think pacesetter made cats. and for the ported maf...i wouldn't do it unless you knew that it's calibrated w/ the actual sensor b/c if it isn't then you'll have problems
Pacesetter doesn't make the best quality products (or the best looking products at that!). I think the trade would be good if it were a FC header or a Ford Racing Header but Pacesetter....don't waste your time.
And yes the Pacesetter company do make catbacks for Focus'. They sell it in the Summit Magazine catalog.