Wanted Cone style sure grip internal parts

You can use a cross shaft out of a open carrier. Also if you hone the spiders you till they spin free on the cross shaft, you can run it like that. I have done that on several cone SG's.
Thanks for the info. I had heard that the open cross shaft can be used, but with a modification. Not sure what the mod is though.
Where can I purchase the open style cross shaft?