Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
The only reason to change fork width is to accommodate the wider hub most 23's come with. As Joe said above, simply lace a 23 hoop to your stock hub and you're good to go. Use 11 inch spokes, which are standard on 21 inch wheels. It's the same lace pattern, just stood up a little straighter.
Ya I was jus wanting to do the dna fat spoke wheel tho.. I was wondering if the wider hub would work if I made smaller spacer and didn't run a front brake?