Take a look here
http://www.rctech.net/forum/10063326-post12837.html
I now have MMP installed on the bottom of the chassis just ahead of where the platform was. Had to trim the side of the chassis a little but it's a good fit and lowered the cg. The aft center brace is cut out on bothe the center and rear chassis pieces. With the 2mm carbon plate in the bottom my battery packs fit perfect under the rear lip of the rear chassis piece. I'll try and post newer pics later. Cutting the cf plate can be the tough part if you don't have the tools. I had the cf plate so the mod cost me about $5 in hardware. I think having the weight of the battery right down the centerline helps the stability without adding more weight than you need to. It works really good for me.