J mod that trans and 13s easy. Throw a good converter in there with some sticky tires and you could see 12s. Very possible on a bolt on PI car with a tune, jmod and stall.
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 ****.