Hi,
Although the width is the same there are differences in the design that may make a difference. I've only really seen 3 pre made ones.
The Equinox one which will likely only fit an Equinox scuttle properly as it has a recess molded into it so the dash they do will fit this recess.
The flat ebay one with the IVA curve on the bottom. I tried to buy one of these but it never turned up and the user is no longer on ebay
That leaves the one that Louthy has on ebay ( looks like its the same one as Gillham provide )
That one should fit any scuttle but looking at the radius on the bottom I'm not sure it meets 19mm radius so may have to be foam covered.
I ended up making my own from leftover aluminium sheet with the 19mm radius on the bottom.
Cheers
Stot