I have been doing buisness with Chevy Duty since Mark Jansen ran it out of his home in Shawnee Mission, Kansas and have had the least frustration with that company than any other supplier. When there is a goof it has been resolved quickly and satisfactorly everytime. If the part is small that was incorrect they don't even ask for it to be sent back. We also do buisness with Carter, Filling Station, Obsolete(Nashville), LMC, and several others. We do not do buisness with Obsolete(now Classic) Oklahoma City or any of the California suppliers. These people will take your full payment and put anything they don't have on backorder without your permission. Don't even get me started on Ford venders, it's too near the sabbath.