Gibson J-35 Long Saddle Mod Opinions in Gibson Acoustic Posted June 27, 2017 · Report reply I guess the rectangle bridge was throwing me and I thought J35s already had a long saddle. Anywho, this mod can be done by a good luthier/tech. They plug the existing drop-in route in the bridge and then cut a new long saddle slot. Someone was recently asking about this on the Martin forum: http://theunofficialmartinguitarforum.yuku.com/topic/186333/convert-modern-bridge-vintage-style-bridge I guess the trick is to find someone who's skills you trust enough to do this. I personally think your J35 would look great with a long saddle in the rectangle bridge.