Probably that truck went to Galveston a lot.... you can see the difference between Galveston cars and Houston cars...yes its a short drive, 45-50 minutes , but not everyone in Houston goes there.... my axle code, on a Wisconsin car (road salt) is visible ,even though barely... of course the car was sold in Wis., not sure how long it was i DFW where I bought it...4.5 yrs ago, former owner had it 7
and Houston is pretty well spread out ,your truck could be from the southern part....? its another 60-90 mi from S to N here too...on whats 'considered' Houston.