Stick with Classic. I have used them and they are great. Also, that rubber one you are looking for is available at your local auto parts store. That's where I got mine for the 69.
It really is just as simple as that. Some of these companies just won't ever get it. It's extremely easy to correct a problem with 90% of unsatisfied customers IF YOU CARE TO.
Right Stuff detailing.... I have been using "Right Stuff Detailing" in Columbus Oh. for roughly 8-10 years now, and the one and only problem i had was a set of wrong disc brake hoses sent to me once..... After a brief phone convo with the owner (Dave), he told me the correct ones would go out that day. They did, i received them within a day or two. Also he told me to send the wrong ones back whenever i could, or drop them off at the next swap meet i went to. Never had any fitting issues with their lines either, and i have completely done 5 cars with their products. John