After adapting many different ways for different applications. My preferred way is to remove the shaft, cut it just north of the drive pin hole for the factory vibration / rag joint and have the 3/4" od end machined to DD.
From there use a DD universal joint and finish off to the rack and pinion with a combo vibration dampner and universal. Of, course , use DD shaft for the connection. Safe and secure.
It is a good idea to make sure you have a properly functioning poly-bushing in the end of the column to keep the shaft centered and secure.