This is a relatively simple design for replacing the drawer rail slides on the Y axis.
Print the Y base and rod adapters in ABS. I printed the spacers in ABS, too.
Print the cable management in PLA or you won't be able to use ABS juice on your bed.
I printed everyting with 30% infill.
I drilled out the rod adapters after printing to be a snug but not tight fit on the rod so that I could slide it in place as needed.
If you don't use a spring based leveling system, you only lose 3mm of height over stock and you retain the full usable heated bed. I found that I only needed to add a washer under one corner to get acceptable level and I'm not sure I needed that.