Build your own FD2 in a smaller box - they easily fit into a 1590BB and i've started work on building one into a 125B (Boss sized box) which is going to be tight with the boost side in too.
The Madbean Deadringer is a Fulldrive 2 Mosfet:
http://www.madbeanpedals.com/projects/Deadringer/docs/DeadRinger.pdf..or there is a vero layout on Sabrotone:
http://www.sabrotone.com/?attachment_id=1084I've built the Deadringer, but not tried the vero yet.
Ian