The Purchase Agreement contains the Hud requirement on the disposition of wheels, tires & axles. This purchase agreement can be used in all states except Arizona, Colorado, Florida, Maryland, Michigan, Minnesota, New York, New Mexico, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Texas, Virginia, West Virginia and Wisconsin. It has a section for Insulation Information on the face of it. This form is also available in an fill-able pdf version as EVForm 500 ,with this application there is no need to purchase or store paper forms again. Click HERE to go to the Fill-Able product Form EV500 page..