Do you offer any type of oil thermostat with your kits?
Your kit looks nice...
EDIT: "They are available with either a normal sandwich plate or a thermostatic sandwich plate. " Proper!!!
A thermostatic sandwich plate will make for a clean install of the kit. My biggest issue with my external oil thermostat was all the hose running all over the place. More hose = possible loss of pressure and more joints that can fail or leak.
Where you thinking of mounting it? In front of the intercooler?
What about the space in front of the wheel arch where you did have the airfilter piped to? wont see it but it should get enough air if you create a duct to it from the fog cover?