I have the cs-144 on a custom bracket from member MDill with york. I am running a pair of 52" belts. As a comparison the PS belt is a 54".
From what I remember when I tried using the stock bracket you'll need a belt slightly (1/2" to 1") smaller. There is so little adjustment left on the stock bracket that I would recommend getting the new one MDill sells. Good part, good price.
Good luck with the 144, you'll love the difference once you get it spinning.
PS, make sure you defeat your ammeter.