Here's what I got for a potential build. The shape is a Kenskill. The sidewall length is 133" (11'1") in this drawing. The dimensions are based on a stretched HF 1720# trailer. The interior is straight from the Lil Diner. The wheels would be mostly under but the wheelwells would be under the seat. Skin this baby in Al. The top/bottom pic is over/under axle config. I like it lower.