I am looking in to running a single Weber downdraft on a Chevy 292 inline 6 to replace the worn out Rochester B. I would be replacing the stock Chevy intake, and running Langdon cast split exhaust. I was informed by Tom Langdon that when doing so I would need to run coolant through the intake to replace the stock exhaust heat system. My question is, I know this is a somewhat common issue with the Rochester Bs, but, are the Weber downdrafts as prone to freezing up? I'm wondering if I'll need to make and plumb a coolant plate to keep the Weber from freezing up. I have seen numerous downdrafts used on hoodless rigs with little to no heating provided, but, I would wager most of those vehicles don't get driven as much, or, in the cold conditions that this engine will be seeing. It will be in a 64 C10. The model I'm interested in running is the 44 IDF or something very similar.