[jdkskyking]

That could explain the engine change so early.  Newell has historically been good about special requests such as a different brand engine.  The issue has been complicated the past few years by emission requirements and some engine manufacturers moving out of the over-the-road engine business.

Glad to hear you are pleased with your C-12.  I know that coach 714 (a 2004) had the same engine as yours.  Yours is one of only a few Newells with the C-12.  Coach 723, 742 and 752 (all 2005's) used the C-13 and 728 had a C-15.

#744 2005 C-13 ACERT - 1642 ftlbs torque compound turbo capable of 43.5 psi (coach built in Aug 2004).