The ralley dash is OPTIONAL with all V8 engines. Tachometer would not work right with a 6-cylinder. I have seen many 318 automatic cars with a ralley dash, hemicudas with ralley dash, Challenger R/T with ralley dash. I have seen Hemicudas with standard dashes & 383 cars with standard gauges. However, you never know how many mistakes are on fender tags. Anything is possible.