Okay, for those of you who were asking about the Energy Suspension bushings or at least, in terms of them squeaking goes, I talked to Pete about it and this is what he told me. I should note, he said a LOT and so I will quote him verbatim.
Regarding cold weather, here's what he had to say about it.
Pete feels extremely confident that the bushings will hold up to any abuse you can throw at them, says they're more durable than the factory bonded rubber bushings and that they're impervious to salt and contaminants.
Last but not least, the rack you see on their JL Wrangler is a prototype made by buy a company in San Jacinto, CA called RSO Performance. For those of you who were interested in it, you should give them a call and ask for Tyler.
Hope that helps you out
He explained that well.