2003 engine on M.net - $800
 

Miata.net Classifieds

I hope this isn't breaking a rule or anything, but if someone is in the Arkansas area, this might be a good deal for you. The post doesn't say how many miles it has on it, but seems like a decent price for a complete engine.

Of course, I am not affiliated, just wanted to pass on something that seemed like a good deal.