The day finally arrived wher eI mounted the new stainless steel cooling pipes. (Pictures below.) They look nice, I think.
When mounting them I recommend that you attach the hoses to each pipe first, so they are suspended by the hose. This allows you to move them about and tighten the hose clamps with ease. There is only just enough clearance between the pipes to pull/push hoses and clamps onto the pipes, once they are mounted in the brackets. Trust me, I tried and the other method is much easier.
Once attached it is pretty simple to fix the pipes in the brackets. These have (of course) been refabricated in stainless steel and new stainless steel hose clamps procured. The new clamps are 12.7 mm wide and do not cut into the hose. Also, the "thread" is pressed into the clamps, which is better for the hose too. All bolts, washers and nuts are also stainless. Sweet
Finally I mixed new coolant and filled about 8-9 liters into the system. I used a vacuum cleaner to suck air out from the small hose that attaches to the top of the radiator, thus ensuring that it is completely filled. Next step (starting the engine) will have to wait until I get the shield back in the front and the battery re-connected.