Op.....I replaced the freewheel on my Langster with an ACS Crossfire a few years ago. Bike Depot (Thornhill) installed it for ~ $45 (parts/labour/taxes in)
It works fine and "clicked" very loudly when new. I kinda miss the announcement of my whereabouts....
https://www.amazon.ca/ACS-Crossfire-.../dp/B004JKPXAE