Eyepiece Projection / dSLR / 200p or XT8

[atmenterprises]

I was able to move the mirror up the tube in my XT8 recently and successfully achieved focus in my dSLR. At prime focus, I'm limited to a 1200mm focal length, so I'd like to use eyepiece projection on targets like the moon and the sun (with a solar filter, obviously).

However, I don't know where to start. I see tele-extenders and eyepiece projection kits but they either say they're for SCT scopes or there's something else about them that doesn't seem quite right. Anyone have any ideas on which piece to buy? I already have the t-adapter and t-mount.