I have a waste pipe which is 4in higher than standard - because of a massive RSJ (its a loft conversion).

So either,
1) raise the level of the toilet area
2) use a new wall mounted frame and pan - and probably encase it within the room (though 4in raised loo is a bit steep?)

If I go with 2), are there any waste convertors to go from a 4in pipe from side? All the diagrams are from the floor and a smaller waste pipe.

Thanks