Been trying to make a few drawings of what I want to do but it's kind of hard without having the actual truck in front of me. And I'm doing this in the middle of packing boxes because we're moving in three days. Anyway, here's what I have for now. Many adjustments and modifications will need to be done once I get the truck and I can physically check if things will fit. From what I have now, the size of lipos would be limited. I would try to fit the Losi Muggy steering bell crank in there, secured to the bottom plate. I would like to use the E-Revo tranny but it needs to be positionned to the front a bit so I don't know yet what to do about the center shafts.
I thought of making the top plate out of 3 mm CF, the bottom plate out of 3 mm thick T6 6061 aluminum and the rails from Delrin blocks if I can get a supplier from the web. I would need to buy a new tool to make the rails, a band saw. Been wanting a band saw for a long time and never got around to buying one. Here's some pics.
Lower plate
Upper plate
Rails
Bonus pic