GReddy has the most popular oil pan for the RX-8 and here is why; it's capacity is 600 cc's over the stock unit and it has both built-in cooling fins, as well as an additional oil return fitting for turbocharged applications.
Greedy #13545900, Fits 2004-2008 RX-8s only.
Price includes shipping to all 48 states. Hawaii, Alaska and international orders may be extra. Contact BlackHaloRacing@Yahoo.com for a shipping quote.