Locomotive boilers are not rocket science. Any competent boiler shop with capabilities to handle the scope of a locomotive boiler can build one with proper, informed guidance from the customer. Key point here is the customer has to be knowledgeable about what they want and be involved through the entire process to make sure the fabricator is actually building what they want. The parties involved in this project are knowledgeable and/or are willing to get knowledgeable people on board to direct the construction of a new boiler. Shouldn't be that big of a deal with proper direction and the application of enough $$$.