Need Radio
I've used the 70 or maybe it's the 71 and up knob-type A Body AM/FM in both my 65 Dart GT and a 65 Coronet 440. Fit perfect in both so I'd expect one ought to fit your 67 as well. Issue is finding one - even the ones that don't work can be pricey. More so especially in working condition. You could also have your AM converted to AM/FM and only you would know.
I currently have 3 and will be re-installing 1 in my 65 GT; another in my 65 Barracuda. Also have 1 out of a 67 or 68 Chrysler but it won't fit anything except the Chrysler or maybe another C Body without extensive mods to the dash.