Sorry All ! I just received a new phone! I thought I was on the forum for my specific Coach. I have a 2007 Road Warrior manufactured by Weekend Warrior the engine is a Chev Kodiak 5500 - 6.6 liter Duramax Diesel. The part that I'm in dire need of is a Plastic CAC Cold Air/ Intercooler pipe. Part # 25781940. It bring cool air in to the turbo the tubing rub up against the AC line. I tried mending the plastic, but there a lot of psi going through. I tried for six months and have struck out, GMC is made the part obsolete. Funny but isn't I get parts for my old tractor and my old car, its getting real hard on keep older things. I have tried e-bay, banks and places that have Duramax Diesel parts houses. I like the idea to check a muffler shop will try that anyone suggestion will be greatly appreciated. Thanks Guys !