"The piping is 2 1/2" both intake and out."

I assume, OD (outside diameter), which would mean that it's nominally 2" PVC. That's a good size, but the nomenclature will be important when you go to get all the bits and pieces.

If you REALLY mean 2.5" pipe . . . you are into some really oddball stuff, and should make sure of your replacement fittings BEFORE you cut anything loose.

Ben