Rear Body Tub Floor 330267 for. Replaces LR part no. 330267. Land Rover Series 2 2a 3 SWB 88. '5083' is a very good marine-grade high strength aluminium alloy, it is very similar to the original Land Rover 'Birmabright' material, it is also much harder & more scratch resistant than the commonly used '1000' series general purpose engineering alloys.