I took the dataset that I used for another project (which contains ~80k vehicles) and made it available to the public fee of charge. You can search all vehicles from the 40s until current. So for example if you wanted to look up how many vehicles dodge put out between 1990 and 1999 that had 2.0 litre engines you could. Or if you wanted to see which vehicles from 1988 - 1994 came factory equipped with a turbo/supercharger, that would be another option. The search filters can be combined to create a wide array of results. Anyway, I just figured I would post it here and maybe someone else can benefit from it. The service is called: Car Spec Search and can be located at the given url: http://carspecsearch.com
Let me know what you think!