I have a '77 201 with the fixed rear bench seat, and am planning to modify my seat so that I'll be able to fold it flat for more cargo volume when flying solo or two-up.  I'm especially anxious to be able to easily carry full-sized bicycles among other things!  I'm going to do this via a 337 Field Approval, and possibly even make an STC for the modification. So, I'm wondering how much interest there might be from other Mooney owners with the fixed rear seat to make such a modification.  In my