Not an exact answer to your question, but a worthy note perhaps. I have that Donaldson filter on my 4.2 80 series and it works well. It's big yes, but it's an 80! One thing that you need to take into account is airflow. I fitted a smaller version before this one and in essence I couldn't get above 50 mph. It practically sucked itself into the engine. I don't know if there is any data on recommended engine sizes from the manufacturerer but it's worth checking. Small and neat, I'd go for that, but it may simply not be possible.