They'll be plug and play. You just buy whatever LED is made for the stock bulb size and roll. Or just get a really good halogen to put in there.
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 ****.