Add a second engine on FARA, and you have a Boeing Apache replacement, not a Kiowa replacement (admittedly the original FARA spec is far from a Kiowa).
This will not make Boeing happy. With all the FARA specification changes, Boeing could rightly file a protest to request the FARA competition be reopened.
With the loss of FLRAA, Boeing Helicopter engineers have nothing left but upgrades to 50+ year old designs. To retain the capability to design new helicopters, this time around Boeing might invest in developing worthwhile proposal.
What ability to design new helicopters? Boeing has bought/merged into every helicopter in their suite of offerings, or licensed the design for them. Even the YUH-61 had an MBB derived rotor system.