I generally build the car up to a roller on the trailer, it's a good height to work at and there is no need toget under a GT40.
Next job is to fit the windscreen wiper components, I fit them early as they are a bugger to get to when the dash and steering cross beams are in.
I use a
VB commodore wiper motor (Lucas) and I use a switch from Ron Francis wiring in the States to operate it.
You fit the steering column cross beam to the chassis with the AC evap fitted. You actually cut holes in the cross beam and this distributes the cold air the different vents. The thing about this set up is you don't have 2inch pipes crawling behind your dash everywhere.
Fitted front brake rotors and and knock off hubs.