Thanks, link acted funny but I got to the bottom of it. Pooter is now downloading it as the 1990 application list I have has been very useful over the years.
It's worth learning what the various letters mean, especially if you have either a tuned engine and need to alter things, or in the case of my JAP LTOW, you have 14mm inserts fitted and are needing plugs not even invented when the engine was!
