[Pinchecharlie]

Dont know what year .keep your working on but I think they work 63-87? Anyway don't know if your interested in a 3 inch drop springs? I have a new in the box set that I am not going to use. Came from western chassis. If you are I'll let them go to you for a song and dance deal. They are for a 73-87 front end on my 65. No biggie if they are too low.
To answer your question I would bet brothers are fine and I would bet many are just the same but sold by everyone. Speedway is cheap and hotchkis and beltech are more money but have more choices on the rate. Could call Eaton or apparently there are more manufacturers of springs that you can get what you want. Let me know thanks charlie