Ah, the wanderer returns. Welcome back.
@Mark Piercy: you can see the manufacture year in the BECM using Nanocom.
Land Rover rad core is thicker than Nissens and I would have thought, superior. Nissens has been fine in mine though, even towing, although temp climbs when going up 1 in 3 with 2 tons in the trailer and foot to the floor.
Silly boy the tow bar is not for towing on the P38, it's a reverse parking sensor.