Been a week since I started using the car again and I still have the smell of rubber from the new heater hoses. I am guessing that is one reason why Land Rover used ally pipes, that and getting them through the bulkhead.
That reminds me, in order to hold the new rubber pipes steady where they go through the bulkhead I snapped off the old plastic holder (accidentally to be honest but serendipitous) made two 8mm holes top and bottom and then made holes in the same place on the rubber grommet for the pipes. I then made up a plate from an offcut of 3/4" oak floorboard with two 32mm holes which is just big enough for the protruding part of the grommet to slot into. So my rubber pipes go through the plastic holder, through the grommet which is in its place in the bulkhead and then the wooden plate clamps through with two 8mm bolts to hold the whole assembly rock solid and prevent any movement where it passed through the bulkhead. I cut the old ally pipe ends off to join the old pipes to the new.
@brianp38dse - I have enough 19mm hose left to do yours when the time comes.