Oil Cooler Kit - Setrab - $350 (normally $558 new)
Z1 Motorsports Thermostatic 25 Row with protective hosing (the oil cooler kicks in at 180 degrees)
It has worked very well, but I am selling my 370Z now. I'd prefer local pickup (Dallas) if possible rather than shipping since it has had oil in it. I have the openings covered to prevent contamination.