i'm sorry..i misunderstood. i thought you were going from a 2 piece seat set up to a 1 piece seat off the newer models.
yeah..hiding the 'stuff' is the tougher part. though a lot of folks relocate the rectifier and then just put something over the mount holes i think. i wish there were a 'rack' of sorts that would fit directly on there with a solo seat so that area would be useful.
something like this: