Sadly I have the same problemed setup. I only wish my engine was a tilt tube engine. That would certainly make things so much easier to install a steering setup. I have all the necessary hangers and support items from the old stick steering setup, but I was wanting to see if anything else would work. I see probably not. And that makes for a tricky engine tilt issue as well. Here is a picture of how my steering was setup before I removed all that old junk to rebuild everything. It is a little hard to see but it is how such an engine can be setup up for a steering cable instead of pulleys and such. Hope this helps you out a little...
Actually behind the leaves is the pivotal bracket that you will have to install if you plan on tilting the engine at all. Because a solid rigid mount won't allow the engine to move otherwise. That part would look like this;
As you can see it have the ability to move and angle to accommodate the engine movement...