I got you, thanks for the info. I just need now to devise a modification to the bike rack. My e-bike kit comes with a rack and I cannot afford another so I have to figure out a way to make this work. It's finally getting shipped here tomorrow! I cannot wait to get this thing together. I may have to bolt on some extra extension bar/parts or some kinda of clamps to make this work.

It can connect to the seat post. I am thinking perhaps still connect it there but where it can pivot up and down instead of being locked down tight. This way the rack will still move with the rear suspension.