I don't recall seeing any posts here on using a Barsto barrel in a 97.
I have fitted two Barsto barrels in Sig 226 slides and all I needed was a small triangular file and some time. And those barrels shot great. I bet you can read a good description of what to expect for the semi-fit install on the Barsto site. It isn't difficult, just take your time and go slowly with the filing, er, fitting.
Joe L