Some awesome creativity and thinking going on in this thread, I love it!

A few comments for you mopar1994 from the pics you posted:
First, be aware of your driveshaft angle as you put the trans in - its hard to tell from just some pictures, but it looks to me like the driveshafts are going to have some rear-ward sweep (hubs behind the outdrives) to them with the outdrives where they are; and forward sweep is generally more advantageous, especially for a mid-motor car as it helps generate forward traction on power.

Second, have you thought about how to mate the Losi driveshafts with the AE diff outdrives? Those dogbones there are a bit big... your best bet might be to try and fit some B4 CVD's to the car? I'm not sure how the lengths would work out.

Keep it up, it's looking good!