Yes, it is a separate board, the tape head itself is on the left. Sorry that the pic was so blurry. I guess I'll try to contact SGS themselves... and done. I sent them an email, but who knows how far that'll get. How bad would it be to just desolder the wires and hook them up at random? (obviously not hooking up the red wire to ground)
I have found plenty of datasheets for the TDA 3420, and that is what I was basing my previous statements on (Those tricky websites pull you in making you think they have what you want, and then do the ol bait 'n switch), how different/similar can they be?