To make it fit the CB header I will need to get a new flange welded on but before I did that I thought I would rotate the turbo housings to make the orientation correct for my setup.
It took a lot of spray lubricant, a little heat and a hammer to drive off the turbine housing but I got there eventually.
Unfortunately, this is what I found

I was surprised to see this as play in the shaft seemed minimal but I think it's obvious to see that the turbine has been making some contact with the housing.
I have contacted the company I bought this from and I'm awaiting their reply.
If they want to offer me a replacement then I'll give that a go but otherwise I'm back to square 1........ Turbo selection.