If anyone remembers I bought this cab from ebay without a grille and I've only just got round to fitting one. This is pretty much a bodge-job but it looks fine and will give some added protection to the speakers.
First is the frame in the cab when I was just checking its fitting, as you can see my precision-woodworking skills are pretty much non-existant but I was just showing in case anyone was interested in doing it themselves..

And here it is with cloth over it. Its a bit lighter than I thought it would be and I guess I should've painted the frame grey to match as you can see it, I thought you wouldnt :P

All in, it cost about £20 to do and I'm pretty pleased with the outcome :D