No difference. Best budget longtubes for these cars are JBA. Period. BBK are not much better than Pacesetter TBTH quality wise and power will be identical.
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 ****.