Yesterday, I had the opportunity to visit Summitt Racing.  I was looking for an oil cooler.  The many units they had were built very similar with the tube basically penetrating a thin sheet of metal.  It did not appear that the sheet metal could withstand 200mph airflow.  They were rated by engine HP.     The next step is to look for a pair of third generation Mazda oil coolers and have them cleaned and tested.  has anyone used this "fintube" design oil cooler on a rotary?

Joe Berki