get the stock sliders, making the brackets for all 4 seats took me honestly 15 minutes. it's just 4 identical and small Z brackets. They work great, they are holding up great yet the seat itself is completely falling apart.
I did mine with a "new yorker" but you can do the same thing with a vice and a hammer. you just need 2 right angles in a piece of 1" wide 1/16th inch or so steel bar.
I can take pictures if you want.