Here are a few useful / interesting downloads to help you with your DS.

Air Filter Sticker Set
This is a reproduction of the Air Filter Sticker, made by Chas Vyse.

Engine Bay Sticker Set
These are reproductions of the Oil, Water and LHM stickers, again made by Chas Vyse.

Sticker Sets Readme
These are the instructions supplied with the above stickers by Chas.

Ignition Timing Scale
This is a reproduction of the Ignition Timing Scale which is bolted near the alternator. Print this out and have it laminated. Then stick it to a small piece of Aluminium and rivet it in place of your original. I made this myself using Photoshop.