R1128 is a GTL (1108cc; the chances are that the number on the engine plate will be 688 D7/12).
600 is the UK, so I'm guessing it's RHD.
J032989 is 1986, according to the PR900 parts book. (the J numbers started in 85; J023097> = 86; J033300> = 87).
705 should be the paint code (red).
This page and site are invaluable: https://www.la4ldesylvie.fr/index.p...ntification-des-renault-4&catid=30&Itemid=242