I have the same setup but with the 318 engine. I just ordered the K&N KIPK, should be in today. I was told it will help the engine breathe alot better ecspecially with the cold air intake. I don't think its going to make a big difference, but it will make a difference. I also ordered a Hughes cone air filter to replace the K&N cone one. Its bigger. Go to hughesengines.com and look it up.
Also you could replace your stock thermostat with a Robert Shaw 180 degree thermostat to help the engine run cool.
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