Usually when an engine is ported its for a reason, i.e. racing, whenever someone is racing an engine or a huge load is put onto an engine it isnt going to last very long. Port the engine if you want I have both ported and non-ported engines. I enjoy using my ported engines more than the stock port engines. It's all up to preference weither to port an engine or keep the stock ports. Do what you want. I have both and enjoy the hell out of driving my ported engines.
Rotor On!!!
Tony