Since I am undergoing a turbo upgrade on my car, I am considering upgrading my oil cooler also.. Z1 is offering a larger oil cooler at a great price [ http://300zx.com/Products/PerformanceIndex/powerplant-performance-engine-external.asp ] vice the over $200 bucks that Stealin wants for one... I don't think I have ever heard of a reason NOT to upgrade the oil cooler, anyone ever have any issues with going to a larger one?? any fittament issues??