Tony,
The turret has a new home now but I can get you any sizes that you may need. Centre height is the same as your current tools. Turret did have a wedge system for holding the turning tools, so that you could change tools without indexing but since you had to index to get at the grub screws for the drilling, it seemed an over complication.
I found it non user friendly and have gone over to a toolplate system. Have you seen my video of the hosetail? Using the turret it took about 60 seconds. With improvements to my TCL, this same job now takes only 35 seconds with a toolplate setup. I will try to do a video (not another video!!!!) in the next few days.
Ian