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
Assuming the car was built like the U.S. versions, it's a 318 car which would have come with front disc brakes. The fender tag or build sheet would give you some option codes. The engine stamping indicates that it's a '75 Mound Road built engine, so, not the original to the car.