In addition to the items in the POR-15 kit, you'll need a copy of "The Buena Vista Social Club" CD, to help you slosh the materials around thoroughly

When you remove the sender, make sure the "sock" filter on the end of the pickup is intact. The earlier pickups used a bronze screen that disintegrates over time; newer units use a polyester filter. You can probably obtain a universal replacement, if necessary, from your local auto parts store.