which intake? hyperpack or short clifford?

I have used the Clifford intake with nice results.I attached a 390 Holley. The hyperpak is way longer and it will definitely be a problem with cold weather. You could make a waterbox to attach to the bottom for heat, with some home fabrication. Of course the hyperpak looks cooler and retains a higher value. If it didn't work for you, then you could sell it for a profit and buy a water heated Clifford unit. I see that Clifford also now sells a 1.6 ratio rocker assembly, way cool.