Overhead Frame/Trailer Style Parts Books Available Documentation: 8117 Rev. #05 Starting Serial #021HD17001 Rev. #06 Starting Serial #121HD17001 Rev. #07 Starting Serial #221HD17001 Rev. #08 Starting Serial #321HD17001HDII Rev. #04 Starting Serial #710944X-10 Rev. #03 Starting Serial #510258X7115 Rev. #01 Starting Serial #610291