Stays with old style Tball ends

I think it's unlikely that you could buy shrouds "off the shelf". They're usually made up specifically for your requirement by a rigger or rigging shop. There are many around the country, unsurprisingly located in areas with plenty of sailboats.
You probably need to be quite specific about the hardware and dimensions you want, to make sure they get it right.
If you're in an area with no riggers nearby, you could talk to someone like Hall Spars and Rigging (RI, I think), Offshore Spars (Detroit area), Maybe Charleston Spars....
Thanks Vince- West Marine came through for me. Just stepped the mast Friday and put the rig to the test yesterday in 10-12kn. Nice to have new wires!!!!