Drive shaft for '65 long bed.

['65 chevy lover]

I'm to the point that I'm fixing to get driveshaft made for my ,'65 LWB. First question is, being a long bed, do I have too make it a two piece (like the original truck) or can I make a one piece. The truck has 2.5" drop spindles in front and, 2" drop springs in the back. Also, what kind of price should I expect to pay. Of course I know that the kind of metal that is used and, whether or not its one piece or two will make a difference.
Thanks in advance!