It's a Ford one & it's not the special long one that costs a fortune. To identify it properly I'd send the pic to Burtons. Some of the Ford ones had a flat face & some were curved like yours. Shouldn't be a problem for Burtons.
That looks right - but all the ones I've seen have the carrier as an integral part, but looking at your photo, it does look as if the bearing is separate. Looks like it has the "Lotus Cortina mark-up" on it!