Conflicting Symptoms (Steering Wheel Vibrations?)
A vibration in the steering wheel suggests CV joints. I would rule out the CV joints by doing some low speed tests. From a dead stop, crank the wheel over to the mechanical stops and then back off a 1/2-inch so as not to overheat the steering system. Then do a low speed circle with the wheel hard over and listen for clicking or popping, which is the symptom of an excessively worn CV joint. Repeat the test in forward and reverse, hard left and hard right.
I have seen, but unfortunately do not have photos to share, of engine compartments that were demolished by a CV joint failure at freeway speeds: punched holes in the engine block, knocked the starter off the bell housing...
A slipping clutch 'may' create some torque steer that is noticeable at the wheel, but torque steer is normally only noticeable under hard acceleration events.