I do not have the forward section of roll bar installed right now but when the interior was done we had to make provisions for it. I moved the door handles where they would clear the roll bar. The door panels had to be built to clear the roll bar. Once interior was designed I removed the roll bar. Window controls are on center console. Window motors are Vader and I love them!
Door handles are aftermarket hot rod which I powdercoated flat black. The spline adapter did not fit the Pantera door handle spline so I 3D printed an adapter for the spline:
Rear bubble is steel and removable:
Steering column is Speedway Motors generic column which I built a surround for. I hated the Pantera column plus the wheel is removable now. With no provisions for turn signals I built a turn signal and light controller where I built an encoder to keep track of the steering wheel column to cancel the turn. Later this developed into an inertia based system and I have since achieved Patents on them.
Heater box is from scratch with a circuit to control it a bit different then normal ventilation systems with 8 servos.
That's at least some of it.