The Porsche 928 had a V8. And flip-up headlamps! And the engine's in the right place!
Of course, they're all almost 20 years old, so any examples you find in good condition will be dearly priced. If you want a modern, front-engine, ridiculously expensive German sports coupé, then I suggest either the Audi RS5 or the Mercedes CL63 AMG.
they only make 6 cylinder engines. they make straight-6 engines found in the jaguars and boxer engines found in subarus. i have only seen a V8 on a cayenne.