So here is a pic of the Mid with a genuine LWB Mid undertray.
I was comparing it to the ZX-S undertray and it seems the ZX-S undertray whilst based on it is slightly shorter, and ditto for the body compared to the LWB Mid, will have to be very careful when I cut the ZX-S shell and undertray out to make sure get them sitting perfectly on the Mid
Still this is missing
And to install that I needed to trim this piece to clear both the steering post and also the nut holding the ball joint onto the steering parts
And this is how she looks with the belt cover on, I went for some stainless screws there too for consistency