While we're on the topic of rack boots, there's a quick way to slip on a new boot without removing the tie rod end, just grab a zip lock bag, put it over the tie rod end, then coat it in oil/lube/grease and then slip the boot over. Turn the tie rod end upside down if you need extra leverage. If you still have the factory spring clamp that secures the small end of the boot, get something like a toilet paper cardboard tube and crush it around the clamp so it doesn't tear the boot as you pull it over (make sure that clamp is inside the zip lock bag too). Try not to get oil or lube on your hands/gloves otherwise everything becomes a slippery mess, ask me how I know...
I bought a rakboot kit some time last year, and it was a neoprene boot that was cut to size. It's still on my car, but worth mentioning that neoprene is significantly stretchier than the factory (epdm?) rubber boots. I was able to pull on and stretch that thing like a gorilla and it wouldn't tear, I haven't tried with the factory boots lol. The rakboot kit was nice, but its raksok was just a glorified zip lock bag.