Not really foaming at all.
First of all, the was actually the first line to get R160s. They were removed because they were unable to go to Far Rockaway, because the trains literally sucked all of the juice out the rail, leaving the R44/46s literally no power to run on. It has been fixed now.
Second of all, there was also one signed up as an Lefferts Shuttle. Heard some rumors about them being signed up as and also.