Most of what wreckerman said was true, we owned alot of Detroits and have never seen a red one, but that doent say they didnt exsist. a 1974 Pete probably would have a 318 Detroit which wasd the engine of the day back then. We had a 1974 Brockway with one. The 8v92 we had was silver, the Silver92 was what Detroit called them.The one we had was a 445 and ran excellent, they were available in 475 HP also, and slobbered little oil(note: Detroits slobbered oil out the breather they really didnt burn it). We had a Series 60 ( 4 stroke, electronic)later they were green again. we didnt like ours it was 450 and had alot of trouble with it, blew up twice. But they claim the 450 was a bad engine, and had alot of problems with the pistons flaking, both incidents were covered under warranty, the 425 series 60 ran forever this was in 1994. Another interesting note is the early detroits were designed for marine applications and if you lugged one too much it would run backwards, pulling air through the exhuast and blowing exhaust out the air cleaner, not a healthy senario. They were made to run and you would offen downshift at 1900 rpm on a hill and attempt to stay at 2200 to 2300.