Jim,
There is not much to one.
It needs a 43mm hole, some method of clamping, it also need the hole far enough out so the body of the Kress doesn't foul the Z axis and not all Kress's are the same.
I have a couple of early single speed ones and they are far bulkier than the modern 800 watt ones.

Where it fastens in relation to the Z axis as regards length sticking out depends on the design of you Z axis or will rely on a sub late or a cranked Kress bracket.

I can do a drawing and take some pics of the one I have just taken off my router if that will help you but it will have to be later as I'm off out at the moment.


.