Many, not all, Durst medium format enlargers have a post on the carriage that runs up and down the column. In my very limited experience that post has the same diameter. I am running a M601 head on a longer column from another enlarger, not sure which one, it came to me that way. The post on both of my M601 enlargers also came with a 3/8 hole for a tripod head. Post diameter on mine is 32mm. If your head has a socket at the back of the head, measure it. It may be cheaper to buy a complete enlarger than just a column.
Durst parts can be a challenge, less so in Europe than the USA, but still a challenge.