Rebuilt engines?
 

Is there an average (in miles) at which '93 RX-7 engines start getting rebuilt? And how does that affect the blue book value? (Should I put in what the car has on it? or just what the rebuilt engine has on it? for total miles?)

Sorry if I missed some valueable piece of info, I'm in a hurry to go buy groceries before work! O.O *DASH*