I really like my FLD except for that front fender. To me it just has no style.
The freewheeler has a nice lighter looking one.
How can I tell which fender will fit without modification?

 

Unless someone here knows that answer, I would say just take some measurements. You might get lucky and it will be a good fit or you might have to do some fabricating.

 

Any modern(at least 2006 up) FL softail fender will fit. Heritage, Deluxe, Slim, Fat Boy