360 vs 383

For comparison sake, the '70 AMA specs for a Barracuda/Cuda list 3 separate 383's:

2bbl - 290@4200
4bbl - 330@5000
4bbl HP - 335@5200

The 2bbl and 4bbl both show the same cam (256/260), but the 4bbl HP shows a 268/284 cam.