Sadly, no, there is no fixed sight that will fit the Cut on the Target. You are pretty much stuck with a Kimber, the Bomar, or having the slide welded, and recut. Sucks, I know, I have been considering alternatives for 2 years with mine. I haven't haad any problems with mine, thankfully, and will consider the Bomar BMCS-K if I do.
After I found these things out, I had wished that I had gotten a fixed sight Kimber instead... Oh well...