Hey RodKnock,
Look for a California car, I need to eliminate as much competition for SB 100 registrations as possible in 2008

.
In your post, you mentioned that "As an FYI, the cars that I'm considering for purchase were sold as a roller (or body and frame) and subsequently finished by Joe The (Hopefully Competent)Mechanic."
If a car you're looking at has never been titled but is being sold as a complete car (i.e. demo Superformance), you're going to need to have separate receipts for the roller and engine/install and CO to present at the DMV.
Good luck with the search.