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Converting the transmission case cooler ports to AN-6 isnt hard with the correct parts. We purchased a pair of these fittings from a local shop. They convert the O-ringed nontaper-threaded transmission ports to a male AN-6 end. While the factory used metal crush washers to seal this type of fitting, we substituted robust Viton O-rings which are effective through 400 degrees F. The fittings were carefully tightened a quarter-turn past snug.