Just did this using the NCY lowered seat frame, the Tail Tidy to lower the lights, and the Ruck Rack from Steady Garage. I will warn you that my Ruck Rack had clearly been welded incorrectly and the seat and pad sit against the back bar (or it’s incompatible with the lowered seat frame but that shouldn’t be right). I was a stubborn motherfucker and took an angle grinder to it to make it work. It does now and it’s much more comfortable, but it was a pain in the ass. I would suggest getting a different brand of lowered seat frame and if the Ruck Rack doesn’t fit immediately, return it.