Stock Ridgecrest: swapped the battery up front, Axial universals, 18t pinion, flipped the shock/link mounts, layed the shocks down, installed M3 machine screws and several sets of knuckles and C-hubs...
Running a 7cell 5000mAh NiMh, I get 80-90min of run time.
EDIT: A bunch of time was spent tuning the ESC with a CastleLink, it is a blast geeking out with the settings and fixing an out of date firmware issue.