The most affordable option would probably be the Teleflex MN dual function, single lever control (314302-111). They are the black plastic ones with tilt/trim buttons on both sides of the lever. They work well and are only $135.00 new. The only drawback with them is that you have to closely follow the instructions provided as it relates to setting up the correct pin positions for OMC. They ship in the reverse pin configuration from what you will need.
Alternatively, you can use a new BRP single lever binnacle that are around $300. They are nice units, and you can order with integral key switch if you do not already have a hole for the key switch cut in your console.
