... I think there's a corvette motor in my cuda.

Mopar big blocks have 2 variations, low deck & tall deck.
Low = 350, 361, 383, 400
Tall = 383, 413, 426, 440

Yes, they made a 383 version in each with very different bore & stroke combos. But the tall deck 383 was only around for a couple of years. Late '50's and/or early '60's.

Intake manifolds, crank, rods, pistons, pushrods and distributors are the main parts that wont interchange between the 2 versions.

There may be a couple of minor details I missed. But I'm a small block guy.