Mine are 29" from the center of the ball to the center of the chain bracket on a Reese set-up. If yours is close to this it ought work.
"Not all who are laundering are washed" say Bill & Heidi
'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737