Below are some website links which may be of use to you.
Priority Realty,
LLC ~ specializing in finding homesites
NAHB/Modular ~ The National Association of Home Builders Page with
information about modular homes
Bob
Vila on Modular Homes ~ See what Bob Vila has to say about
modular homes
Quality Modular Homes, Inc. - Representing Heckaman Homes in Eastern Michigan, including Livingston, Shiawassee, Genesee, Washtenaw & Oakland Counties.