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What do you mean? As in, do they have an unlocked shop version and do tuning for people? Or do you mean, do they produce and sell it?
As far as the first one goes, I don't know. But I would imagine that at their level of business that they own the same utilities as the factory for this. But I could always be wrong.
But if you're asking the second one (which I don't think you are, but I'll answer it anyway) no, LS1 Edit was put together and marketed by the same guys that brought us LT1 Edit.
If you're looking for someone with the program to tune your car, try putting yourself on the LS1 Edit mailing list and just asking. I'm sure there are guys in your area that can help.