There is a couple more pics on my old website.(see below)
Yes its correct that the high pressure hydraulic hoses run trough the heater chanels. had to remove the innside of the chanel to do this.
I chose to use expensive hyd hoses due to the possibility of making sharp bends without kinking the hose. also they will not make condense.(ore break)
corrosion is not going to be a problem anyway with good inhibition with dinitrol products (aircraft stuff)
There is going to be 2 airlocks that may cause problems, but bleedvalves on top of them is going to solve this i hope. (The toyota mr2 sports car have 3 airlocks and it works fine with bleeds)
I am also going to use 2 expansion tanks. one in the front and the original subaru in the back.
Have not filled the system with water yet so i dont know if it will work.
Vin.
http://home.broadpark.no/~oharaune/Karroseri.htm