Cam suggestions

The confusion I have is I found many specs for a stock 340 cam of .429/.444 lift with duration 268/276. If this is the case, then the above cam isn't stock "O.E.M. replacement".

Mopar Performance P4452782AE
Part Number: 312-P4452782AE
Purple Shaft Hydraulic Camshaft & Lifter Kit
  • Chrysler 273, 318, 340, 360
  • Advertised Duration: 268°/276°
  • Centerline: 114°
  • Lift: .429"/.444"
  • RPM Range: Idle to 5800
Cam not in quotes from Year One is a "Competition Cam" called a "Magnum Muscle" cam.
Above cam is the "OE" MoPar cam.
THAT is the OE cam spec.