Throw the MM and UBEC on the right side (on the mud guard if you have to), and then you'll have more room on the chassis. This will allow for better handling, since the ultimate handling would occur with everything lined up as close to the center of the chassis as possible. Here's my Hyper 8 for reference:
http://img.photobucket.com/albums/v1...o/IMG_5551.jpg
Any variation of that will work, of course.
SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz