I am doing some homework on a transmission pan drop, filter change, and a fluid refill, and was looking at alternate drain pans that have drain bolts for ease of future fluid changes. Dorman makes such a pan, but when I searched for the car (2004 PT Cruiser), two pans were listed- a transmission pan 265-801 and a transmission rear cover 265-820. Both have a drain bolt installed. http://www.dormanproducts.com/gsearch.as...nsmission%20Pan I'm not familiar with "transmission rear covers". Is this something unique to Chrysler? Should I buy or do I need to buy both for a pan drop and fluid change? I'm unsure how to proceed on this at the moment. Thanks!