I have only one 2" eyepiece, a 32mm 70°...
There is also a 38mm 70°, but I would keep to a 32mm and under.
This one is similar or exact, on the inside, the lenses, as my own, and will be fine for an 8" f/6 Newtonian-Dobson...
https://www.sirius-optics.com.au/sir...-eyepiece.html