Are your lipos stick packs? If so, that wipes out the Durango, it's saddles only - there's a height limit on them too as the driveshaft passes over the lipos in all the Durango 4x4s.
Considering you're hoping to put a 540 can motor in it, and are after a 4x4 SCT, the SC10 4x4 fits the bill - most of the other 4x4 SCTs have heavy drivetrains that benefit from a 550 can motor, whereas the SC10 4x4 is lighter, and has no centre diff, so less load on the motor.
Or....get the Hong Nor/Hobao/DESC410R/Losi SCE and replace the motor with one of these:
http://www.giantcod.co.uk/black-mant...-p-405064.html
http://www.hobbyking.com/hobbyking/s...idProduct=6672
You have a sensorless ESC with the amp capability to handle these, so those motors are a good, cost effective match.