Frank:
The only thing significant about 60K miles on the servicing of this truck is that the air filter and fuel filter need to be replaced.
If the truck needs an A or B service is dependent on what was done last, not by total mileage accumulation. If the last service was an A service, the next one is a B service. If the last service was a B service, the next service normally is an A service, unless the B service was performed more than 14,000 miles ago.

Replacing the fuel filter now can be a bit of a challenge, as the original filter type is no longer available due to an upgraded filter. To install the filter requires replacing some fuel lines on top of the fuel pump/fuel level sensor assembly, which in turn requires removing the left half of the rear seat.
Gilly