oil pressure relief valve location 68 Barracuda

You didnt mention what oil viscosity this happened with. Also some oilfilters have crappy gasket retainers. No thats not quite right. Some oilfilters have a crappy designed gasket retainer in that the gasket barely gets compressed before the retainer bottoms out on the plate. So in essence the rubber seal is too thin.
I hope you didnt lube the gasket with anything but dyno oil