M3 Fuel Tank Cover Question

[Andrew Rowe]

Would any one have the dimensions of the fuel tank cover , mainly the length of it, ( 1165mm?)and how does the bottom tray attach to the cover. Is this all one piece that the fuel tank sits in, including the cover , or is this bottom box a separate unit, it has folded up sides about 2 1/2" high, but my old one seems to have the same dimensions as the fuel tank itself, bearing in mind that there is 1/4" packing timber that goes down the sides, so the dimensions of the cover has allowed for the timber, but the tray at the bottom has not?? Are you confused yet? Some photos of this cover and tray would be really great, Thanks.