Originally Posted by Brian Carlton

Carrying a spare alternator is usually not required because the brushes and voltage regulator are usually the point of failure. It's a small item that bolts right to the rear of the alternator.

Carrying a spare starter is usually not required because, in an emergency, you can push start it with another vehicle. Furthermore, changing the starter is an extremely long and arduous task on a 617 and you'll never accomplish it on the side of the road without a lot of specialized knowledge and tools (and a lift!).

Some belts, a glow plug fuse, spare fuses, a glow plug relay bypass shunt, fuel filters, and some headlight and taillight bulbs, duct tape, and some extra coolant will usually fill the bill for the trunk.