OMC to Merc conversion

[wire2]

I've cut a step in the transom to accept a slightly larger piece of plywood than the OMC "boot" hole, now want to lay out the holes to accept a Merc Alpha gen 2.
I understand Merc has a template available to do it, does anyone know the Merc part number for it?
I'll gratefully accept any hints/suggestions on assembling the Merc parts in my boat, I believe I have almost everything I need, can borrow an alignment tool.

 

[Bondo]

Re: OMC to Merc conversion

When I do That,.....
I've always gotten the piece of fiberglass with the Merc. Hole in it,+ used It, glassed into Place for my guide........

Just cut it out of a Junker hull........