Looking at a pic of a FRST item on the bay, no - they are different in terms of mounting, there is no mounting lug on the FRST item, also one of the breather pipes is much smaller (narrower) than an ERST breather item.

If you were asking if it would work on your ERST, then yes possibly.
The smaller pipe i would vent to a catch tank and breather, the positioning on this hole suggests it could normally route to the metering unit on MFI, which i would just block off anyway as pretty much defeats the object of having an uprated breather. Then i would plum the rest of the pipes in as per a normaly ERST bailey breather.

Are you running EFI or MFI?