SW third gen front sights are unique to sw third gen only.
some may make them for third gen smith, or you can take some for a 1911 and cut, and file to fit one, but that could prove to be expensive if you destroy prototypes or if it looks funky.
or you can take a sw front sight and cut and drill for a fiber optic rod, but most fiber optic sights utilize length for more light gathering capabilities and the sw front sight blade is short, so that means the light gathering potential is minimal.
There is a custom business that specializes in PC auto stuff but I cannot tell you the name or provide a link.
maybe someone will chime in with that info.
good luck