Good evening to all,
Having used Vulkem 636 on my '65, I have located the
manufacturer and a list of distributors. They do not
make 636 anymore. They have a 911 in gray and
aluminum. Having used the old, this is the stuff. Go
to tremcosealants.com and they have a link to find
your nearest distributor.
The best part of all this, I found a distributor less
than 5 miles from my house and only cost $3/tube