Questions about truggy conversion

Hey guys,

I've been messing with my Muggy for a couple of months now and have come to the conclusion that it will never be what I want it to be. I went out and got a new truck today. Although it wasn't my first choice, I got an 8ight T. I wanted a Mugen, but my LHS doesn't stock parts for it, so I got what they do stock parts for. I know that it couldn't possibly worse than the Muggy, so it should be an improvement.

Anyway, I want to take a fresh approach with this conversion, so I was looking for some ideas.

The first question is how do I mount the motor? I could move the steering servo to the left side of the chassis and mount the motor toward the front of the truck on the right. Or I could put the motor on the left. Or I could put the motor on the rear right. What would make for the best weight distribution? I know that I want to run a single pack, either 4S or 5S lipo.

The next question is about the center diff. If I do wind up doing a 180 with the diff to mount the motor toward the back, I don't want to cut a new hole in the chassis. If I just shim the diff up, will there be any drawbacks.

The last question that comes to mind is about chassis flex. Not 5 minutes after I bought the 8ight, I started talking to this guy who was telling me about all of the after market crap he put on his truck to stop the chassis flex. Everything from aluminum stiffeners, to extra braces that bolt to the chassis. From what I could see, the 8ight is built pretty well. It has a really thick 7075 chassis and I could hardly get it to flex by twisting it. Is there a flex problem with the 8ight? Are there any upgrades that would be considered necessary?

I'm sure that I'll have more questions later, but that's it for now.

Thanks.