Hi Doog,
Yep that looks to fit perfectly.
The main problem with my batteries is the fact that the wires come out facing the side rather than upwards like yours.
When i bought the chassis i figured that i would be able to run the wires through the other side (i.e. facing the opposite was than in my pics).
When i feed them through this way though the wires catch on the drive belt and servo.
Unfortunately i donated my old chassis to a mate.
So am not able to swap back.
Doog where are your adjustments at please?
Are you at the maximum width setting with that battery?