Fairchase, I just noticed your question. First you need to understand that you cannot hunt on a cwmu with a general muzzleloader tag, no matter what region you have. ie northern, southern, or otherwise. CWMU tags can only be drawn by Utah residents. Non residents must purchase CWMU tags from an operator of a cwmu, and they normally run around $6,000-$12,000 for the best ones.
The point is that you can't just buy permission to hunt on a cwmu with your muzzleloader tag.
For some of the best CWMU hunts I would call Kim Bonnett with bucks and bulls outfitters, or deseret land and livestock.
Just my two cents