Is a 2003 dodge ram 1500 hemi's exhaust 2.25" or 2.5"?

ok so i want to get a super 44 flowmaster for my dodge but its in texas and im in florida i want to get the flowmaster before its brought down here to me but i do not know if i need to get the one where the inlet and outlet are 2.5" or 2.25"...pleased help =) thank you