the DLC function vehicle_attach_ragdoll doesn't require any tags to be attached to it just requires a vector3 to where the body should be attached to relative to the car's position, and it can accept 6 as maxDid a file search, and "truck_4dr_pickup04.car_pc" is the only .car_pc file with "chain_hitch" in the hex. So only the Compensator can use it.
Thanks for the insight.
So, am I correct in thinking the only difference with the DLC function is the name of the attach points it can use, or is there more to it than that?