In this thread, I'm going to highlight the build of my Losi Ten-SCT conversion, and shed some light on the reasons behind doing it how I did.
First up is the chassis. I fabricated it of 6061 T-6. It's 1" over stock, which puts the wheelbase at 12.8" when the rear hubs are in a neutral position. They are adjustable +/- 1/8" or thereabouts. I didn't want to go the easy route of flipping the arms as this induces drive shaft angle issues. There's no sense in messing with the best 4x4 geometry on the planet (Losi 8ight 2.0) so I wanted to keep all those angles stock.
The Losi conversion, no matter how you design the hexes, is at the maximum legal width, so that narrows your list of bodies considerably. I made the body mounts to fit the widest bodies out there that I kinow of, the ones designed for a Blitz. The Stock blitz body mounts and fits just fine. Speaking of the hexes, I shaved and cut the stock ten-t hexes to 12mm and 5mm in thickness.
Left, right, and views from above. I decided against black anodizing at the last moment and went with blue to match the shocks. You can also see how much the driveline has been straightened. Center diff has also been moved rearward 10mm.
Blue anodizing turned out great...on the small parts. I need more amps for the chassis sized parts evidently. 10 amps was not enough, and 50 amps made more of a hard coat anodizing that doesn't take the color quite the same. Oh well, It's a racer, not a shelf queen.

Good enough for govy work I guess. During this build, one of my foremost concerns was making the truck look as factory as possible. I ended up being ably to retain the factory mudguards, and managed to fabricate the chassis with zero extraneous holes.
In my original mock up, I used a slash 4x4 rear bumper. It was fine, except it stuck out too far for my liking. Since this is my no compromise racer, I decided to bob the bumper. Turned out good except for one misdrilled hole. Note to self, don't try to watch TV and drill at the same time. This also removed 15 grams of weight, and moved 25 grams 1" lower on the truck. Front bumper is a stock slash bumper with a fabricated delrin piece for the top mount. Body mounts are stock slash 4x4 mounts, on delrin angles.
Coming from the slash 4x4, what I wanted most was a Low center of gravity, and better weight distribution. I think everything substantial is below the bottom line of the chassis on a slash if the images were superimposed. It's LOW and WIDE. The shiny part on the battery try is vinyl I used to hide the esc wires under the raised lip of the battery tray.