Already got one in
Mr G you said that on a Public Forum you know!!!!!!!!!!!!
@OP not the easiest space to dynamatt the centre divide is not solid and does not go end to end plus you have the petrol pump access panel in the bottom and a lot of wires in there.
With a bit of work should be possible thou and some wadding would probably help in the back where the angle is tight?
Let us know how it goes
I've done a bit of research on the American forums and I'm still deciding whether its less trouble to find a box with the right dimensions.
I'll let you all know how it goes.
I've seen these before, is that the earthquake one? Where is it mounted?