I purchased a used JPI EDM760 (from a Baron upgrading) for installation in my 1966 680FL. Unfortunately, there is no STC for 680s even though there are multiple 500s and even a 685.
Looking over the JPI documentation, it appears there is an STC to allow the install of two EDM 730s or I can knock over a couple of liquor stores for the STC'd EDM 960 with all the bells and whistles.
Anyone operating a 760 in a 680? Any thoughts on two x 730s? Cost and efficiency of the 960?