Make it a 360 cid. Use a 350 crank and bore it 0.060".
If you are going to build a mild street engine, it will be much easier to make 350 hp with a 350 than a 327. Plus the torque goes up also.
If you are going to stay with a stock converter and highway gears, then use a cam around 212 degrees at 0.050". But will need a good set of heads and a set of headers to make 350 hp.