Front suspension issue.

My steering wheel and front wheels shake a lot when going around 60mph. It happens at other speeds too, but the worst at 60. I recently was involved in an incident where a bunch of wood came loose from a truck I was behind on the highway. I ran over a lot of the wood going highway speeds since I could not change lanes. Now the shaking is worse. Any recommendations on what to do? The shop that lexus recommend to me is Giving me crap saying they don’t feel the issue after test driving. They fixed the other damages caused by the wood. It was a company truck that chased the accident and they are paying without going through insurance.