Linear Rails are they better than smooth rods?

With the guideway on the top of the y rail Looks like it would fit no problem Attaching to the original plates This

V rail What's interesting, it didn't have to be connected to that slot and how they were implemented in different laptops Tapping

linear slot diffuser plenum box sizing OpenBuilds V-Slot Linear Rail : : Industrial & Scientific

linear slot diffuser residential V-Slot is a high quality extruded aluminium profile building block that has an extremely smooth linear v groove rail on all 4 sides