DMV? LOL! They haven't had jurisdicition of the manufactured home industry since June 15, 1976. I would recommend you contact a manufactured home dealer in that area. They can help navigate you through the entire process.
Most RE professionals don't fully understand all the nuances relative to this industry. A good local MH dealer will be able to do a title search directly through the California Department of Housing and Community Development Department. (HCD)
In fact you can contact them yourself. They're located in Riverside. Feel free to contact my wife, Janis, she deals with them everyday on title issues albeit they're relative to "Resident Owned Manufactured Home Communities". But she'll certainly be able to point you in the right direction.
3737 Main Street, Suite 400
Riverside, CA 92501-3337
Street Map * (951) 782-4431