Jep...try using search facility, type in oil cooler. This topic has been discuss before. But frankly, I never seen any topic discussing oil cooler for seg before. Hopefully there are sifus can assist you. Good luck dude.
Ive had problems with my idling(engine stops when unstable) for quite sometime. I took the effort to take my Altezza to Trial and got the MAF sensor replaced with a new one. Magically the problem got fixed...