Reason for head job

I'll show you why i need head job a.k.a porting and polish for Suzuki G16 MPI 16V SOHC. There is some rough casting on intake manifold, as engine need smooth air flow this should be removed. and, there is distinct ridge on intake valve on transition between casting process and machining process.exhaust manifold.. in chamber, there is manufacturing defect, can do nothing for this. but for this can.. there is small area for unshrouding valve seat, it's dangerous as it can reduce compression ratio. and some port matching.