The picture is That of a Hammer V8 DOHC head engine which is way wider than a SOHC V8.
My continuing research shows Euro logs exhaust are narrow and tight to the heads so no problems there. Ignition ICU from euro V8 does not appear to present a problem either. Both cars have electronic speedometers no problem. V8 Tach would fit into 124 cluster tach hole. Saw a Ford V8 302 transplanted into a 190E (Smaller, narrower engine bay) that did not appear to be a hassle.