I would like to know if the new Maxamps 4700 mAh battery packs (7-cell hump pack) will fit in a XL-5 Stampede chassis without making any modifications? And also, I have a MM5700 brushless system installed on my 'Pede, and I was wondering if these batteries will hold up well to the power of brushless??? I'm not ready to make the leap to lipo just yet, so I've made up my mind I'm sticking with NiMH for now. Thanks alot for any help!