300 HP 360 Magnum Crate Motor Upgrades

Well being a landed a smoking deal on a slightly used 300HP Mopar Crate 360 I was wondering what could I do to bring it up to the 380 Hp version that was available at the same time this motor was introduced.

I am getting ready for to get the 1973 Duster going and wanted to tear into the motor before I clean it up and paint it. If the cam is the only difference then it's a no-brainer.

The specs are:
Part # P5249498
Horsepower: 300 @ 4750 rpm
Torque: 375 @ 4000 rpm
Compression Ratio: 9.0:1
Block: Cast Iron
Crankshaft: Cast 3.580" Stroke
Heads, Chamber Size: Cast Iron
Valves: 1.925" / 1.625"
Camshaft Lift: 0.512" / 0.512"
Dur. @ 0.050": 238 / 238
Intake: M1 Aluminum Dual Plane


The 380 HP
Part # P5249499

Horsepower: 380 hp @ 5300 rpm
Torque: 410 ft-lbs @ 4400
Compression Ratio: 9.0:1
Block: Cast Iron
Crankshaft: Cast, 3.580"
Heads, Chamber Size: Cast Iron
Valves: 1.925" / 1.625"
Camshaft Lift: 0.501" / 0.513"
Dur. @ 0.050": 288 / 292
Intake: M1 Aluminum Dual Plane


The cam is the only difference I can see. Will the cam add 80HP. Please chime in.

Thanks