however,,,,,
when the PVH hubs and rear seal are removed they (should) reveal a clean bore thru the knuckle.
the live hubs only contact the outer 1/2" of that bore. the rest of it is open to the elements and mine has lots of rust there which will prevent the rear seal from sealing. the hole will need cleaning/machining for the rear seal to work. the hole is about 4" or 100mm.
I'm in the rust belt, your results may vary.
that's the backside of the '04 knuckle. as you can see the hole isn't very clean.
another point of interest, on the back of PVH knuckles the area around the big hole and bolt holes is machined down a small amount. the '04 isn't and that makes the knuckle about 1/16" thicker. so the seal will have to be pushed down in another 1/16 compared to a PVH knuckle.