You can buy receiver cradles , as I have seen them advertised in 4WD Australia.
The cradle can take up to a 9000Lb winch, but it is just a square tube ,baseplate plus handles so the winch would need to be wrapped in something if in the car , which is not such a big deal.

I hold mine down with HD rachet straps attached to the driver's seat base and to loops rivetted to the floor near the seat mounts with HD rivets. A winch flying around in a rollover would not be funny.

You could easily weld some loops on the baseplate for shackles. You would need to buy a winch where the contactor box could be attached to the crossbars.

The cables could be easily done by doing what Warn does, about 2 metres attached to the contactors, and an Anderson plug with a short length with matching anderson plug on the battery. The Warn rear anderson plug screws to the bumper and there is a short earth, which is attached to the body and a heavy welding type cable to the battery. I leave mine unattached as it is not fused LOL . Whenever I want to test, all I do is tap the + on the battery +. No sparks = good .

If I were doing it today , that is what I would do.
Regards Philip A