I have wanted to convert my CR10S Pro to Linear rails but haven't found any kits available that I liked. I did find this kit for an Ender 3 and decided to use it as a base to design my part.

https://www.amazon.com/gp/product/B094ZD5DHS/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

I already had a MGN12H linear rail from another project so all I had to do was make the bracket for it to connect the x carriage plate to the MGN12H.

Update: Added brackets to connect a linear rail to the X Gantry.