Callen has done repairs for me, and have built some custom shells for friends of mine. They do first class work, and they will custom design and build what you want.My old office used to be right next door so I watched them build a lot of different campers, and trailers. They built this incredible trailer for the police S.W.A.T. Team that had everything, and was rock solid. This is the place if you want something custom, and very well built.