It's easy to get de-motivated on this sort of thing, folk need a lot of prompting, may I suggest you set out all the info you have already in an easily read way using word pad.
Then start another thread named something simple that folk might search for, like 'Diamond T register', and cut and paste your list to there, it will then show up in Google searches via HMVF, and more people will see it easily. Every time you add to the list, or some one posts to the thread, it will bump up the thread again, and new members/visitors may see it and post new info. With a bit of luck Lee might make it a sticky.
This worked with my index, although I didn't help myself setting it out the way I did (not easy to edit). I get a few PMs asking me to update new owners etc., although I haven't added to or bumped it for a while...http://hmvf.co.uk/forumvb/showthread.php?10943-Scammell-Explorer-Gallery-INDEX
Always best to keep it simple as has been said earlier, it will get complicated all by itself!