On 9/24/2021, Christopher Cox via groups.io wrote:
PHOTOS pushrod RHD rack converted to Twin Cam spec by Peter Wood (oil nipples relocated underneath by welding drilling and tapping)

Some dimensions taken from my own steering gear are :
OUTER STEERING COLUMN CHROME TUBE 81.6cm non adjustable column
INNER STEERING COLUMN SHAFT 91.2cm non adjustable column
PINION SHAFT LENGTH VISIBLE OUTSIDE RACK HOUSING 43.6cm pushrod RHD rack housing with relocated oilers per Twin Cam

RHD converted Twin Cam rack right side up

RHD converted Twin Cam rack right upside down


Pinion shaft length outside the rack housing



Above, non-adjustable Outer Tube. Below, outer tube ends, followed by length.




Above. inner fixed length column. Below, and dimensions.



MGA Steering Racks/Columns - all models (click for spread sheet)