I would not go with Pacesetters. BBKs for cheapies, SLP or Kooks if you want the best.
Also longtubes would be the last mod I do although in your other thread you were asking about parts to help launching. Get a tubular K member (UPR is the best one for drag IMO) and while the K is out do the longtubes. Perfect time to do it.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.