Yeah very quick.
Yeah mate I looked at it yesterday and tried thinking of a way to measure the pipes etc but one or two of them would defo need custom work.
Basically you have twin pass core, 1 x throttle body silicone (which can be used as standard), 1 x straight ali pipe with 45" bend which connects the throttle body silicone pipe and bottom core outlet, 1 x custom straight silicone pipe with 90" bend(this enter through slam panel from the core), 1 x 90" ali bend about 150mm length, another 90" bend (but silicone)which connects to either pancake pipe or your own custom pipe to replace the pancake.
I didnt take inside diameters as everyone is different but at a guess I would guess about 60mm
Here is the guide which will help you make a custom intercooler too
http://ths.snapalbum.co.uk/MK4%20cooler%20instructions.pdfHope that helps
