My 1978 BJ40 landcruiser blew one of the cooling hoses from the 3litre "B" Diesel powerhouse. I have ordered new top, bottom and bypass hoses, but the ones that are stuffed are smaller ones that traverse down the side of the block.
Here's the culprits (feet & bottle cap left in photo to demonstrate scale)

In this pic, you can see the two hoses (just resting in place) in the centre of the pic (you can even see the tear in the bottom hose)

Zoomed out pic

More zoomed out pic

pic from above (alternator in the foreground, fan belt to the right)

I have looked in the Gregories Service Manual, and I can't find any reference to these.
Does anyone know part numbers, what they are called, or where to find them?