All of the driveshaft boots are the same. There is no early or late.
So they are. I assumed since the /5 swingarm had a rectangular-ish driveshaft opening, whereas the big tube swingarm has a completely circular driveshaft opening, that they would've modified the boot to fit. Looks like the tension clasps were the only parts that changed -- probably lengthened. I'll get some longer clasps.