Cris, NO permits needed. At least I don't think so. As long as every thing removeable from the top ie, stove chimmnies, exhaust pipes etc are removed, and on a stepdeck trailer they should be under 14'. The Motors are 8'wide, allowed 8'6" All of them should be under 30,000 lbs. Could go to 45-47,000. As for the Wolf creek snowshed, If memory serves it is 17' high. The new tunnels have to have at least 16' clearance, I just checked the trucker atlas, and nothing on US 160 is listed for low clearance.
What I am tring to say, None of the Motors are oversize loads. I'm sure someone from Delores will correct me if I am wrong. I have hauled #2 to Durango twice, and the only problem I had was it was 2" to high for Eisenhower Tunnel. 45 yrs truck driver last 20 with a flat bed, and good part of that with oversize loads. keith