Drastically different hours on engine

[Betik]

I say it is okay.
You probably have a bit of cavitation, so I can see the 47mph.

 

[Josserman]

Ok confirmation here 46.6 is the fastest. Dash shows a 53mph, but think that happened either from previous owner on like or it could have happened within first week of ownership.

 

[Gym]

Did this model/year have a timing chain issue? If so possibly an engine was swapped out under warranty and ecu reflashed?