i have the same battery you do:
http://tinyurl.com/5lczln
the battery fits under the strap just fine. and i oriented the connection posts towards the front as suggested. but the problem is that wiring the connection posts do not fit underneath the shell.
no matter, i got frustrated while shopping for a "L" shaped battery post last night, and just drilled holes in the body shell to accommodate the wiring. i'll post a picture later tonight when i get home, for clarity.