After more than six weeks of working on the car off and on, I have the car back on the road. As I mentioned in a previous post, the new lock washer barely fit into the recess in the new damper so that there was no way to get any tool on it to bend it up against the nut. I talked to the tech rep from Pro-Race and the Moss technical people and both agreed that if I using blue Loctite and torqueing the nut to 90 ft-lb would be sufficient. I will be checking it regularly.
If I had to do this again I would replace the bolts which hold the motor mounts to the chassis with longer bolts before lifting the engine. When reassembling the car, I spent a number of hours trying to get the holes to line up. Ultimately, I had to remove the carburetors and the heat shield so that I could get the mount on the driver's side bolted down.
Thanks for all of the advice.