I am considering buying an enclosed 16X7X7 trailer. I can buy it for $1K. The only problem is, it has barn doors instead of a door that opens to make a ramp. I assume I could swtich doors to get what I want, but I have no idea where to buy this. Any suggestions would be much appreciated. I also thought of building a folding ramp inside the barn doors, but I do not know how that would work. The trailer is a 2000 model with new aluminum wheels and new tires. The owner used it to haul a mini cup race car. Also, is this a good deal?