I have the seats - the great folks at Morgan Spares, my local dealer when I lived in NY, had an old pair for sale.
In the absence of a pic of the real thing, my plan is to fashion two wooden blocks to mount the seats to. A higher block in the front and lower one in the back. The tops of both will be beveled to match the slope made by the height difference.
But am still hoping someone has a pic of an authentic set of mounts so that I can make mine look similar. I strive for as much originality as makes sense. My car is a wonderful driver, and excepting the paint, spin on oil filter, radiator overflow bottle, dual master cylinder, and a solid state regulator hidden inside the Lucas case, is pretty close to how it was made.
