I went and bought one of the plastic spoilers from Kingswood Country (Rare Spares?)
I'm not entirely sure its going to look good when on the car.
In the pic you can see the original one (well, the one that was on the van when I bought it) and the Kingswood Country one.
The original meets well in the centre where the new one doesn't. The new one also doesn't have screws to hold it along the top.
Has anyone had experience with these?
I thought the plastic one might be good for use whilst driving and the original one for standing still, but now I'm not so sure.

SpoilerComparison.jpg