I had a gun that Mike Orlen could not do, it was a Winchester 101. I chose to trade off the gun. But Briley said they could install their thinwall chokes in it.
Since the gun had no sentimental value, I chose to change guns.
As I recall it was going to run me a couple hundred to have the thin wall choke installed and a couple of chokes.
Sounds like it might be worth it to you, it was not to me.
I was also warned to be very careful with the gun after install, the muzzle is very thin with the choke removed.
I have not heard anything negative about the Briley thinwalls, or for that matter Briley in general, they have a good rep.
Freedom is not free