Ok so I got extremely lucky this week. I am so glad for people like you Dr. and everyone in this industry. Its nothing like the restaurant business, everyone is so friendly. Its all about cross marketing and pollinating an area. Creating a culture.
The insert i was talking about isnt a beverage dispenser. Its an entire unit that runs the length of the window. There are some that have ice bins, some that have drink dispensers, some that have chip racks etc. as well as the actual windows. From what I have gathered it is all custom builds and requires re enforcing the side of the truck because you are cutting away so much of the box..
I was at a food truck rally this weekend, and I met a few truck owners, they all let me tour their trucks and one of the guys actually does builds. He has built over 40 trailers and is extremely knowledgeable. He showed me around his rigs and the differences in buildouts. Now that I have seen some of the differences I have learned there are certain things I cant live without.
The coolest thing I saw was one of his trucks didnt have a hot water heater...Instead the hot water tank was located above the grill. The heat from the equipment kept the water beyond scolding hot.
I have decided that roof top hood is just a bad move all around and I will be doing side exhaust. There are too many issues with having a roof mounted air unit. Like you said mainly clearance. And I see the issues in the truck that I work in. To do the roof modification that I want is expensive and I am going to pass on this truck but definitely on the next one.
Some other really cool things that cost more upfront but I pay off in the long haul is cold plate refrigerator and freezers. They hold temp much much longer even without power. I will be doing a propane generator that runs both AC and DC power. I will be undermounting the generator and propane. And lastly, im even more excited to get the ball rolling.