Yes in certain cases, 8" or 7" but you need to understand that the surface which the shoes work on is wider on a TLS hub than a SLS.
The spokes on a TLS hub fit into a flange on the outside allowing the area inside the drum to be 33% wider than the SLS whos' spokes butt through the hub, INTO the inside of the drum.
The 1966 T120/TR6 has the TLS HUB but only the SLS brake plate with the wider shoes.
So if you have a flanged hub then the swop is easy. If you don't, then the shoes will be wider than the surface of the drum...................I hope I have described it, so you can understand.