IT WIll FIT NO WORRIES ,THE ONlY THING THAT WIll HAVE TO BE CHANGED IS THE DRIVE, IT IS NOW ON A SPlINE WITH UNI JOINTS.WE HAVE A CONTOUR MASTER ON OUR 9550 SO NOT TO SURE IF All COMBINES HAVE THIS SET UP.OUR FRONT IS 3 YEARS OlD AND IT WAS ON A 7720. HOPE THIS HElPS