Disco 2 Rear shocks replacement?

Hi all!

Can anyone advise on the correct part number for replacement shocks? I have rear air bags, no ACE.
I have either rpd 102363 or rpd 102333.

Need to replace them asap as I'm driving back to Blighty next week for the London Marathon ( see other post for a chance to win a week at our Gîte).

They look to be simple enough to change - any tips please?

You want RPD102363 if you have air but no ACE.

I've got mine to do this weekend - they look simple enough...