Need help decoding VIN and engine number

Hi,

I am looking into purchasing a 1974 Dodge Dart Sport 318.
would anyone be able to assist me in decode the VIN and engine number?
VIN: LL29G4B478243
Engine: 5M31809050431

Apparently matching numbers, but I am not sure about the engine.
Is there any way to find out if this has already disc brakes up front?

Also I just realized that this car had a sun roof prior the Restauration which was closed as it caused more trouble than joy.
Can this be confirmed via the vin?

Thanks,
Antonius
As far as disk brakes while you're under the car just look at the front brakes.
You will have to look on the oil pan rail of the motor to find the vin. Look for the "stamped" numbers, not cast numbers 478243
Example:

1689084154933.png