Nope, none at all. You will need to trash all the crossover stuff though. I got rid of everything except the EGR on my 95. MAC longtubes have the EGR bung which is what I was running.
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 ****.