I didn't scroll down to see that. Looks like it fits the early stuff, and the later master. I don't know what the difference is, but for sure the Russel part fits the later master and slave, plus you a two pack for $20. So the next time you change a clutch and slave, just pop in the new fitting.
$100 is relatively steep compared to the $27 job, but if removing your line from the transmission is a must, looks like the best way to go. If I pull my trans, I always yank it with the engine (it's easier on my car) and just disconnect at the master with zero issues... just something to think about.