[hemicop]

As I recall, many guys just made a new crossmember or added an extension to the existing. But you can do better...
If it were me. I'd add a mid-plate, & make my own crossmemeber thereby limiting the leverage the torquing-over you'd experience bygoing the stock x-member/extension route. Add an input yoke to accept the 1350 series U-joint & you're all set!