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I installed auto glass , professionally, back in the day when these cars were new.
Use urethane not butyl tape. It was urethane from the factory and the new urethanes are a breeze to use.
You can use a damming strip if you like. (It covers the goo that would otherwise squeeze out around the pillar area).
Some guys back in the day used butyl tape. If you are going to use butyl, use the 3/8 and make sure to do it in a very warm shop.