Ah ok, I'll get the tape measure out and check the fronts, yes you're right the rears don't go all the way down so should be fine with those ☺ the sat nav is indeed the built in one in the plastic pod thingy on the top of the dash, above the stereo unit. I've been searching for iso leads relating to this model Forester, i think the grom device that has bluetooth and usb uses the same port as the sat nav plugs into which may cause a problem! Its listed as compatible with my year model but again getting info on it is difficult....short of dropping £100 on it and trying it out i guess?