Here are a couple of mock-up pics of the crude beginnings of my next 1/16 project. I built a big Peterbilt wrecker with 3 rear axles about a dozen years ago, and after seeing photos of Ten-West's big Western Star wrecker with 4 rear axles I decided to do something similar in 1/16. Mine will be a Peterbilt and it'll be a rotator of course. I purposely arched the frame to compensate for the eventual weight of the wrecker body. This truck is approximately 31"-long without the as yet to be built wrecker body.