I want the trailer to be as close to the truck as possible, but not contact each other in a tight turn or when backing at an angle. So, I have some math to do in order to know where to cut.
Once I strip the spaghetti off the frame and cut the rails to length, I will then notch the horizontal flanges of each rail, and then heat the vertical flange with an oxy torch. Then bend the rail in with a come-a-long to control the bend. Repeat with other rail. Once contacting, weld flat gusset plates onto the horizontal areas that were notched. I'll need to add a lunette ring to the front dropped down to the same level as my pintle when both are level. This will be below the frame rail level obviously.
I can connect the trailer CTIS to my truck since it is all a single channel system, it has no idea how many tires there are, it inflates them all to the same level. This will be a third glad-hand connection, first two being air brake. If the ABS module is included, I may be able to run that also. I'll have to study a connection diagram to do so. Front and rear hydraulic tongue jack via 24v forklift hydro pump, 2 small batteries, and a cylinder front and rear.