Hi Fishstix,
Nope, the DFF1 is designed specifically for the Furuno NavNet series but will also work with Furuno VX1 and VX2. It has an Ethernet connection so if you wanted to save some money and get a nice package, you could pick up an older 7” VX1 or VX2 for a few hundred bucks and get a cord with Ethernet on one side and 6-pin on the the other which would solve the connect-ability part. I have the connectors for this and could put a package together.
The DFF1 has the same circuitry as the 587 and 588 and will fire both 600W and 1 Kw like those sonar units—-you just need a screen to show the goods
I know several guys selling a 7” VX2 which would be perfect for the DFF1 (you’d get GPS + chartplotter + sonar). Unfortunately, they don’t include the bracket so you’d have to flush-mount into a console