I am considering purchasing a 260z but want low miles, owner says it has not turned over but I need proof. Carfax does not go back that early, any other suggestions? Thank you

Unless there is a paper history on the car and it's mileage, IMO It would be a safe bet to put a 1 or a 2 in front of the current odometer #.  You're talking about a 42 year old car.  It would have to be in pristine condition to have less than 100K on it. 

Not to worry though, the L engine is legendary for endurance so don't let the mileage get in the way.  It's more about the rust.

Take a look at the pedals for excessive wear, especially the clutch. 

The automotive equivalent of looking at a horse's teeth to determine its age.

Unless there is a paper history on the car and it's mileage, IMO It would be a safe bet to put a 1 or a 2 in front of the current odometer #.  You're talking about a 42 year old car.  It would have to be in pristine condition to have less than 100K on it. 
Not to worry though, the L engine is legendary for endurance so don't let the mileage get in the way.  It's more about the rust.

I'm not sure what your talking about my 260z has 35k on it only. [emoji57][emoji23]

49 minutes ago, DatsunZGuy said:

Take a look at the pedals for excessive wear, especially the clutch. 

The automotive equivalent of looking at a horse's teeth to determine its age.

Note that it is easy to replace pedal rubber covers, unlike horses teeth, so don't put much faith in new/slightly worn looking pedal rubber pads. 

Sometimes the numbers do not quite line up on the speedometer after they rolled over 100000.  But I wouldn't count on that either.  Speedometers get changed also.

So you just have to judge whether the car looks to be low miles or has been driven a lot.  If there is documentation to the mileage that would be great but in the end there is really no way to know.

My 3rd owner 78 has 56000 miles and numbers don't line up.