It may bolt right on to a Jerico, hard to tell. It looks like it could work, might want a couple spacers to offest the shifter off of the plate, so the shift arms and tubes have a straight shot. I don't think you need the counter sunk bolts, might just flip it around or it might line up with the Jerico bolt holes, they have two rows top and bottom. On Mine it looks like the bottom is in the center, but the lower hole in yours might still line up.
The one I have is slightly different as for the plate, but the shifter looks exactly the same.
Not mine but similar...
