I have a 90 W250 and also run THD low pressure piston lift pump. I run a Larry B's liquid filled pressure gauge on the end of the banjo bolt after filter. Gives me some insight into how the filter is doing. I probably have somewhere around 30-50k miles and no issues. I preferred to keep as much as I can mechanical. The hungry diesel sells as a complete kit. The only thing extra I had to buy was a 90° hose barb fitting for the rubber line to the pump.