where do you purchase these that have a -3 inlet and outlet? I can only find one's that have -4 inlet and outlet.

 

I was to looking for -an3 filter,but i´ve give up.

-an 3 to-an4 reducer is on the list now.

 

You could always tap into the oil system after the stock oil filter and save yourselves a headache. If the particles are enough to ruin your turbo, they are enough to ruin your motor. I've never seen a turbo die and the motor live (from particles in oil) when they used that setup.

If you are dead-set on getting that filter, you may have better luck with filters that have NPT fittings. NPT-to-AN fittings are easily found, as NPT is the standard for most presurized fluid systems.