I think REO called their 6 and V8 a Gold Comet in the 50's until the 70's. The V8 went up to 440 CU In and would blow the doors off of a 671 Detroit. But the oil embargo of the early 70's meant the demise of all the big gassers. The would just about stay up with my old 550 GMC. But I was young then and it was the old geezers driving the REOs then. Now I'm the old geezer.