Originally Posted by
Grand Bois
The B66 is a double rail saddle, so you will need a seat sandwich. The B67 is the same saddle with single rails, so no adapter is needed.
The Breeze seat sandwich costs $16.
Brooks B.66 Universal | wallbike.com
For a '74 Suburban? I thought seat sandwiches were needed when one mounted an old style saddle to a new "microadjusting" seat post.