As understand my steering rack is from Quaife Engineering as it has this sliding tube and not the special gaiters of the JK racks.
If someone wants to convert from JK to the Quaife variant, here are some drawings. The information is given to the best of my knowledge, measured of the rack installed in my car. In any case you should measure your rack and verify the information given below is suitable for your version.
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https://tm-img.com/image/V1VAg[/img]
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https://tm-img.com/image/V1SuW[/img]