Cobalt; those air gap intakes in the cold north cause the carbs to frost and freeze up Ive installed quite a few when every one wanted one! and only a few people complained but they started to frost the carbs about 40 degrees (well actually the air rushing through the cab is what did it!) There's no heat under the carb from the exhaust passage its been eliminated! My fix on one was a spacer under the carb that water goes through like the old fords had< the heater hose runs through it and a vacuum shut off from a 76 vette in line.> That kept em warm but didn't cook em!!!! and you can close the water controle in the summer with the vacuum control! I thought I had a brain stom when I came up with that!!
When its cold and humid they frost quick with a cold air package on em LOL
Now that I put it on line someone will market it and get rich But Fords probably still holds the patent pretty well covered! Hell I got the idea from working at fords!!!!
The performers a good intake!! For the north.