I just have a 6 qt pan on my Hemi. I also have an AccuSump. I did not want that big pan hanging down with all the speed bumps around anymore. And my car may sit for a couple of weeks at a time and I like the idea of pre-oiling it before start-up. The AccuSump let's me run the 6 qt pan, provides any extra oil capacity the Hemi may need, and helps the engine to never start dry.