@Ellison8 I would reach out to some of the following 4x4 fabrication shop. I'd be interested in seeing what you are building. I've been considering a turtleback trailer myself but, I dont have the 30k to dump on a trailer.
Stellar Built Sacramento, CA
Hot Metal Fab, Loomis, CA
Califabrication, Carmicheal, CA
Dissent Offroad Grass Valley, CA
Candor Offroad Lodi, CA