I use the 1970-71 stock Hemi-440-6pak oil pan in my Duster with a stroker BB,my motor is slid back one inch from the stock location based on the trans mount. I did have to trim the backside of the K member some to get the pan to clear, I used the stock 440-6pak 3/8 pick up also The motor pulls really hard to 7300+rpm and I've never had a oiling related problem yet in three + years of hard street and strip driving. I use a stock Mopar windage tray and I built the crankshaft scraper for the motor I also had the #4 cam journal grooved so the rockers would oil full time still no oiling return issues that I'm aware of, the motor has been apart several times changing parts and inspecting for the next years use there are a number of oil pans that will work in your chassis but most of the aftermarket ones are a deep sump like the Moroso and Milidons, which for a street car I don't like or use