Finally, I have completed the refurbishment of the main fuel tank and managed to fit the tank back in place. It took me far longer as I have anticipated. Now I want to fit the auxiliary tank from Frontrunner which are made in South Africa. Frontrunner claims the tank hold 62 litres which is more than sufficient for my purpose.
The tank is much smaller than the Long Ranger which is made in Australia and hold up to 182 litres. The advantage of the smaller tank is; it is much cheaper and I can place my spare wheel back under the LC as the original layout was.
The tank came with all the fittings and painted. The paint job is probably good enough for South African roads but definitely not for Europe with all the rain and road salt in the winter.
I rough sanded the surface, then I slapped a couple of coats zinc primer on and after ample trying time a generously amount of black chassis paint.
Finally, I covered the surface with DINITROL 3125 HS wax which can be used for surfaces and cavities. This should prolong the life of the tank significantly.