Most likely the Duo-Glide emblem has it's own pattern. My fender used to say Heritage and I had to fill and drill for the Duo-Glide emblem.
My father used the FLH 1960-84 trees (the lower tree actually has a 1948 part number and the upper a 1960 #) with full headlight nacelle. After 3 attempts with different fork lengths, he settled on 1 inch over FLH length (which is 1 inch under Softail) with 2 inch over cowbells. He then carefully shortened the cowbells1 inch.
Here is a picture