Its not such a far fetched idea
Dsg posting the Panzani rear reminded me how much I liked the xk180 and f type concept rear.
I wasn't going to go so wild and thought that just taking the oval to be the number plate recess might add more to the rear.
When I looked at the Jag's I realised that they had used the front bumper to form the rear.
I had the earlier xk bumper that I had sectioned before opting for the late one for the front, so I bolted it on.
It had potential, the curves were close.
I used this shape to "paint" the pictures on the previous page.
But to me I felt it had a "droopy arse" ie it started to resemble a boxter rear.
I did give it 10 minutes attention on my last visit and after relooking at it I got this idea to flip the bumper over.
A bit of trimming and a lot of filler and it would be close.
Maybe a splash mould could be taken and then bonded onto the z300 rear