Please ask your question below about Motor Home Chassis Parts Catalog for 1972-1973 International MS-1210, MS-1510, MHC-1310 & MHC-1510 An IHPA Salesman will get back with you during business hours which is Monday thru Friday 7:30AM to 4:30PM PST. Questions asked after business hours or during a weekend will be answered the following business day. Thanks!