The only people that may do something directly comparable similar would probably be redring, if they do such a thing, contact them and they may be able to advise. Manufacturers are notorious for making very dissimilar product footprints.
Alternatively, the Mira Multifit's are probably the most versatile as far as water inlet and cable positions are concerned. As far as the actual footprint on the wall is concerned then that tends to be a bit more difficult and all you can do is compare dimensions.