So I posted this a while ago, and I've gotten good feedback on the topic, the details....
I finally got to chance to post an update to the blog linked above. It adds a comprehensive PDF document that lists of all the bulbs in our cars and their incandescent and LED substitutes. More details at the blog site, but here is a direct link to the reference:
Link: DeLoran DMC-12 Incandescent and LED Bulb Reference
Sample:
Hope you all find it useful.