They did not make an RS Orion, but there was a TurboTechnics kit available for the early MFi-equipped ones.

Dees of Sidcup, that my father used to run, was going to be an authorised dealer for Turbo Technics before Bristol Street Motors in Bromley were granted status and one of the demo cars was an Orion Ghia 1.6i on a B-reg. It had the optional RS accessory kit fitted as well.