Exhaust Question

I have 2 questions, does aynone know the stock diameter of the enhaust used on the 98 Taurus's with the 24vavle duratec.

2nd question, is it true that the pipes are mandrel bent standard?

thanks.

the pipe is 2.25" to the y-pipe and then 2" behind that for each muffler. They have only one bend and it appears mandrel bent to me.