I bought my 1931 AA thinking it had the original engine. Serial numbers matched. Thanks to this forum, I found out that the original A engine was replaced by a B engine. I had mixed feelings about this, but the B is 50 HP right out of the gate instead of 40 like the A. Yesterday, I took my truck out on the main road with a portable GPS to verify my speedo was correct. I hit 52 MPH and my speedo was right along with the GPS reading. Now I know my truck is really going that fast which is not bad for a 4 speed work truck. A little rough riding, but fun every once in a while.
14k sounds fair if it runs good and good shape.