[RustyPile]

It can be done, but it's biotch to do it that way.. The pump bolts to the motor, it's just difficult to access those little bolts.. Removing the seat gives you room to lay out on the floor while reaching up under the dash..

Here's an alternative method I used if you're interested.. Install a "universal reservoir" with the pump attached to it.. Disconnect the wires at the OG pump and route the wires from the new pump to that plug.. The new pump will be activated from the original wiper switch.

The plus to doing it this way is all the water lines are now outside the cab, no more wet carpet from a leaky hose or pump..

[EDIT] If you go this route, it's not necessary to remove the old pump..