If anybody's has any other questions about M-code Cuda's or Darts I should be able to help you. Over the years I've owned two '68 383 Darts, one M-code Dart and a M-code Cuda.
What was the difference between the 440 exhaust manifolds and the 383?
Here's the heart of the question...
Weren't the 440 cars rated at 375 horse the same as the B body 440HP?
If the A body 383 was de-rated due to restrictive exhaust manifolds, why did Chrysler not use the 440 manifolds, which do not appear to be restrictive, on the 383 cars?