Wheel arch, mmmmm. Will have to take a look.
Does the wheel have to come off everytime to do this??
If an oil cooler is to be fitted with a thermostatic plate, might as well fit an oil filter relocation kit.
Think pipes with 16mm or 5/8" internal bore should be sufficient. This is what I've been looking at.
By the way Ormi, how much is your IS putting out now?