Well it is getting hot as balls out. What tstat do you have in there and is your fan coming on when it should? How old is the radiator? Also who did the white faces? You sure that needle is back on properly?
Honestly that stock gauge is called an "idiot gauge" for a reason. I HIGHLY suggest you get an aftermarket mechanical gauge for water. And oil pressure.
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 ****.