Differential seals

I bought a 2.88 rear from a 1985 XJS to go in my 66 e-type with a 3.54 rear. I want to replace the pinion gear seal and output shaft seals on the differential. The manuals I have only talk about removing the shafts, but it looks to me like on the input shaft (Pinion gear), I could just remove the nut and pull the flange with a gear puller, then remove the seal and replace it.
Similarly, the output shafts look like they are just pressed on to the output shafts, so i should just be able to pull them and replace the seals. The only issue could be pressing them back on could damage the bearings.

2nd question - the XJS differential and e-type rear appear to be the same (Dana 44), but in looking up part numbers for seals, they appear to be differen. Does this make sense?
thanks in advance,
Bill

Anyone have experience in this?