Correct #s for 69 340 fan shroud???

To be #s matching on my 69 340 4 speed swinger what should the part # be on the radiator shroud? Should it be a 1 or 2 piece shroud? Thanks for any help.

Be careful there are some repops out there with the correct part number 2785614 and the Chrysler insigina. Google the part number and it should bring up the details.