Oil filter housing I changed out just a couple thousand miles ago. OEM. Sound remained. Thank you. Maybe a different oil... the Moly. I may try that next oil change.
I've looked into swapping out the tensioners, but I'm not positioned to pull the engine. IIRC, it can be done with the engine in the car. So... ~$500 for the 3 tensioners and some 'while I'm in there' parts. Maybe in the fall, as it's baking right now.
Thanks, fellas.