All:
I couldn't find a response, so I just called Ruger.
I spoke with a lady at the Arizona service department and she said that sights for the 22/45 standard do not fit the LITE edition.
However, in my searching, i did find the following thread.
http://www.ar15.com/forums/t_5_50/12...2_45_Lite.html
Apparently they were able to install some high viz sights, but they do stand a bit taller. For those more experienced shooters, will that many much of a difference? Since the rear sights are adjustable, I should be able to make some adjustments and zero it in again in theory correct?