The adapter for the inlet and outlet of the cooler is port size -10 with thread -6. Earl's part number for it is: 585106 and it comes with a o-ring. The inlet and outlet are straight thread, hence the need for the o-ring.
The AN fittings are push on -6 AN 90 degree with a 3/8" barb at the end. XRP part number for this fitting is: 239006.