We are in Las Vegas for an engine rebuilding convention and my buddy wants to put on a Big Giant 51" muffler on his 03. We found a Walker straight thru at a truck shop and need a recommendation on somebody around town that would weld it in place. We have not found the 3. 5" to 4" adapter yet but figure a good muffler shop can make one up. Anybody know of a shop we might contact?