There are kits available that only change the triple tree. They still use the stock tubes, fender and wheel. The kit should include spacers to make it all work. I just had the same thing done on my 2000 FXD after I wrecked it. I changed the fenders, but only because I wanted a different look, not because I had to. You didn't include a year, but I'm sure there is a kit available for your bike. Just need to check around. I'm not sure what kit I wound up with. I had my work done in Germany and they must pass the TUV approval. much tougher then DOT. If you need me to I could find out from the shop what is on my bike. You can see some pictures of it at
www.angelfire.com/tx3/shopguy
click on the bikewreck link at the bottom.
Good luck
they make a "Chopper " kit that changes the rake of the front end and gives you longer fork tubes also...they show a lot of pictures of their kits on lots of differant models...or just check out almost any aftermarket catalog....they have lots of differant wide-glide conversion kits....they run about 600-900 dollars depending on all the bells and whistles 
