Before fitting the tie rails, now is the time to give a couple of your mates a call and get them around to help you flip the chassis over to its correct side. Make sure a plan is made on how to flip the chassis and that everyone knows what the plan is.
Allow plenty of room around the chassis for safety, and if you have access to a gantry or forkhoist or even a strong rafter to assist - use it.
Source parts and fabricate the components below for the trailer tie rails.
The drilled tie rail support is for fitting a chain and shackle for securing the rear ramp when required.