Nissan Patrol 4x4 (Africa)

Hi everybody
I need a tray for a second battery for my y61 3.0D.
Does anybody make them or shall I just get a piece of stainless steel and get on with it?

Thanks

Jason what is your plans where do you want to fit it . Wat battery and what charging system?

WHY stainless ?? Shop at shop s for bread ar cake tray of the size .. put piece of wood [marine ply/ pressed wood whatever at boddom ??
for base you make flat bar cradle mos ?