Updated CRT.5 - I picked up a great deal on the CNC parts so picked up front and rear Hubs, Knuckles and the Servo saver...
Then I stumbled across these Lunsford titanium grinder links and thought they'd beef up the .5 nicely...
Lastly I replaced the flimsy top front turnbuckle with a 4mm 20mm gub screw and revo rod end...
I was going to mount the esc behind the battery but then decided to lift it off the chassis to avoid dirt/water - instead I made a custom top plate over centre diff.
This should make everything a bit more robust...