Mine is still the original one, never been replaced. I look it over every time I split the tranny from the motor (3x so far). Should be flush with the engine case or just below. That is the way mine came from the factory.
Original Motor/VF-40 Turbo/15k OCI, Amsoil 0w-30 SSO & Ea. oil filters. Tuning Alliance Stage 2+, 18.5psi. Member; 200K + club. Currant mileage:284200