i would think they would make it a bit heavy on its arse end 😆
Hi Glum , I found this .
http://www.ebay.co.uk/itm/ATECO-HR-D4-Ripper-For-Caterpillar-Tractors-D4-series-C-1960s-Leaflet-3490E-/140947352930?pt=UK_BOI_FarmingEquipment_RL&hash=item20d11ded62
It is a lot lighter construction.
It does look rather heavy, doesn't it.