I am also looking to upgrade to a quick change tool post for my Atlas 6" 10100 lathe. I found one for $139.00 at this sight, but it's not available now.
not sure if they have one for your lathe, or if anyone else have bought from this company
welcome to the forum
i bought a similar set and paid a lot more for it, you will be just fine with this set
you can purchase up to 5/8" extended grip holders inexpensively too.
here is a link for you
you will need to cut the nut to fit your compound, whatever set you get[/QUOTE
It looks nice and I'll have a project to do making the nut!!