All the white faces are, but so are the stock black gauges. You can rip off the black ones and put the white ones right over provided they are actual white face replacements like the MACs.
But if not just reset the needles so they aren't so close to the gauges and make sure the actual holes they go in aren't being constricted by the new pieces.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.