I got my 3.5mm carbon and went to work making the chassis.
outline cut out, drilled and countersunk, spur gear and diff case location holes slotted and slots to locate the battery tray cut.

Bottom view.

Shiney top view.

Centre diff in place.

Rear suspension mounted.

Front suspension in place.
Motor mounted, it all fits in pace on the chassis.
Hot Bodies Lightning 2 Pro carbon, Mega 22/30/2, MMM, 4s3-5Ah.
Tamiya F201 carbon, Mamba 7700, MM, 2s A123 2.3ah.
Xray XT8, 1518, MMM, 4s5Ah.
Lots of boats.
fastelectrics.net