G'day, I have 2 Case 4WD tractors - 9330 and 9370 QT and am chasing a steering column to suit them. Any tips on where to source one (or two). Parts suppliers tell me the same columns were used in Ford-Versatile and Cat Challenger tractors of the same vintage. The columns were made by GM? or a supplier to them? and some cars were fitted with similar columns. Any leads on new or second hand? Thanks for your time.