I don't think there are any dedicated routes except I think they have made an effort to have the reconfigured planes on MIA/SCL. I certainly hope they are standard fare on LAX/SCL (601/600) come December/January, as it will be my first trip not in F on that route. The best you can do at this point is check out the seatmap for your plane/day (checkmytrip will work with the LA PNR#) and if row 1 is shaded out, but with only 5 seats across, it is not yet scheduled to be a reconfigured plane, which can change as flight time nears.