Chassis bracing (floorpan)

[AusSuper]

other than having a roll cage, cos im beginning to like having a back seat still, and still want the thing more rigid, ive been working on a way to strengthen the pan, without reducing ground clearance, interfering with other parts of the car, and also be mostly bolt in setup, what ideas have people got? pics of setups anyone has used would be brilliant also, oh ive already got my idea worked out quite well, just wanted too see if there was anything better out there. cheers everyone