I bought one of Finish Line's coolers and shrouds and then just used a piece of aluminum angle stock to mount the cooler. Remote
oil filter and a thermostat with a whole bunch of braided line finished everything off. (There are pictures somewhere on my website.)
However, unless you plan on racing your Cobra, I understand that the
oil cooler is not necessary. You could just mock up the cooler and some lines and not connect anything to the motor.