360 Magnum building on an existing bottom end

The 360 motor im using has J heads with 2.02 valves stock HP exsaust manifolds elderbrock intake manifold with 750 carb.looking for right cam and lifter set new.not racing this car has 3.23 gears.looking to maximize what I have without being too lumpy as my wife will be driving this car too. Also want side exit exsaust before rear axle anybody with experience or good advice on this subject.Also the best duster 360 motor mounts to use.Any help with aluminum radiators with electric fans for this car ?