I had to mount the seat, I have been putting this off. It has just been sitting on the subframe and I want to build the rest of the exhaust.
so I added some pads to the rear with nutserts in the ends of the tubes and straps to bolt the seat to
I used the nutserts with bolts to use to locate the tail left to right, drilled holes in the straps and made floating hold-down that I will capture with tabs so the hold-down will "float " in order to allow adjustment front to rear and left to right.
Tail is solid as a porn star's behind