AOS - 2 diff models - boot/no boot - which year is which?

[Vtx531]

I had to reuse the clamp from the Uro Parts AOS because the hose clamp (the the PO put on) was too wide. I was able to open up the spring clamp with pliers and put a ziptie on to keep it sprung open. Then I cut the ziptie off after it was installed.

Here is a picture of the two units side by side. You can see the Uro Parts boot is all mishapen and stretched out. Maybe the rubber material they use doesn’t react well to oil.