Thank you for the suggestions. I did try running it at the same rpm in second gear as suggested by CTH. No joy, the ride was smooth and steady at the same rpm as going above 65 in third gear. I have no idea if the alignment shop loosened the driveshaft, I will ask but I doubt it. It was the only shop in our town that would touch it. I was lucky to find them.

Looking through the repair records from the PO, he had a significant amount of work done to the front suspension including a control arm replacement. Most of the rubber has been replaced and the flex disk looks good. Will do a check of tie rod ends and have the alignment shop check the kingpins. The vibration is not severe and only starts above 65 mph. Although it tells me something is amiss, 65mph is fast enough for me with my hobby car. If I need to go faster I will drive my Lexus.

Thanks again for the replies. If I find anything I will post again.

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Ron
1972 280 SE 4.5
2017 Lexus ES 350
2011 Ford Escape
2006 Chevy Silvarado