oil capacity
Your stock dipstick won't read correctly for the aftermarket pan. Put in 8 quarts, run it long enough to get an oil pressure reading, shut off, add one more quart for the filter and then remark your dipstick to show your full mark. The aftermarket pan my keep the oil level below "stock" level, but it's also got baffles and an extended oil pump pick-up (I hope) to better manage the oil flow.