Took a couple of hours to lay out all The cables to figure out what had to go where (wanted to avoid pulling the wrong cables through the wrong spot!).
After a bit of lube (silicon spray) assisted slipping the cables through both tubes - especially the 1/0 power cable.
Knocked up an MDF mounting box for the fuse panel - wires everywhere at the moment but it should be pretty sano once done. Painted it in body colour so it looked the goods (sorta).
As you can see, I still have a bit of work ahead of me!