170k miles is nothing for the V10. It's not even at it's 2nd tune up at that point.
My V10 was going strong at 460,00 miles, but I made the mistake of continuing a hot-weather trip with a plugged fuel filter, and when it leaned out, it melted a spark plug electrode which lodged itself in the #10 intake valve. I still drove it another 5,000 miles after that before having a new motor put in. Cylinder honing hash marks were still plain as day, and when I had compression checked at 430,000 it was still within spec.
My transmission still hasn't been touched yet. Approaching 470,000 miles now.
That said... That's a lot of miles on the house part. I'd worry more about that than the powertrain.