Well I have asked Traxxas to build this and with the world as it is, It's not likely. So I'll build you one and show you how to make your owen. I have scale and weight in mine. So this should be a great build. Most of the parts at first will be Traxxas. This is a large Truck so I my beef up the parts to keep up with the larger scale.
So here is what I have started. I cut a 3.3 style frame and added more Aluminium to get 5 more inches out of the wheel base. This my change when I get the Proline Desertrat t5 body kit in. I installed a Hitech HSC5998TG servo and a LRP Vector8 2500kv brushless motor. The speed control I just ordered is a ezrun 150 that can handel 6s. So Power is going to be good. I also ordered new revo axles that I will be using as drivelines. I will be using Redcat battery hold downs. I haven't ordered them yet, but I have them in my Rampage XB-E and I like them. I will be installing a skid plate that serves as a battery hold down mount and it will cover the drivetrain. What I get mosty with this is a way to keep air from going under the large body. I will also keep the body from rattleling. I have also got 24mm hub adapters on the way so that I can run 1/5 scale rims and tires. This will cause some concerns as it will add mass and weight is never a good thing. I have been looking at a metal gear box the is in the HPI Flux. I have the flux motor mount in my hobby room already. So adding a larger motor to this build is something that I my look at in the future.