Your looking at this the Wrong way. I used to own a Cutlass 442(72) and theres not much of a difference between a 455 Cutlass and a 455 442. My suggestion would be to buy a Older RWD Cutlass(pre 88/89) in nice shape and make it what you want. A Big Block Olds will drop into any RWD cutlass, and a SBO will bolt directly into the location of any other SBO. So if you located one with a 307, you could bolt in a 350, 330, 403 Ect. If you want a show car thats # matching, look for the last generations of True 442s. Arguably this is the 83-87 Era, and since their Rwd, V8, Dual exhaust and 4 speed, i think they fit the bill. These can be located regularly for less than 5K in fair to good shape. The late 70s models are a bit more expensive, but not excessivly. The ones to avoid with a small budget are the 72 models and prior. These are Muscle Cars, and as such they command a higher price. Hope this Helps.