Seal replacement
 

Have owned an '04 RX8 for about a year and a half. Has around 125k miles on it. It's been drinking oil and smokes. Loss of power and now a very rough idle. All the research I have done points to a seal replacement. I have a mechanic who can do it, just need the parts. What do I need to buy? Where is the best place to get it?

Seal replacement? As in rebuilding the engine? Theres a few different company that offer rebuild kits, Atkins, Rotary aviation and Pineapple just to name a few. Make sure you do your research and you'll likely want to order parts after you get the engine apart to see exactly what you need.

Do not visit this mechanic any more.
Start reading the New & Potential Owners sticky thread in the new member subforum.