Need battery tray of some kind

Hi, had the battery under the seat for a while now, thing is I'm getting rid of my 5 series bmw ( few engine problems £400 if anyone's interested) the battery from the bmw is massive and would be perfect for the landy, the only place where it can go is back in the front bay, trouble is it's all been cut away right down to the chassis, any recommendations on how to support the battery or does anyone have this part. Thanks

The parts book is here - pdf Land Rover Manuals | Landroverweb.com it'll show you what the original looks like and where it bolts on. Not sure of the dimensions though.

You may find someone on here has just cut one off for 200tdi conversion.