Host mammoth on 3500 HD 07 Chevy dual rear wheel

I spoke with another dealer that feels EC is too inflexible with options or customizations on their premier models. I know Host and AF are willing to work with a customer if they want something different on any of their models which EC and Adventurer will not do. I spoke with the factory EC rep and walked away feeling like I was attempting to buy an Apple product (only their way at a high price).