I knew they had "T" appearance packages for these but didn't know some were offered with the GN engine in there.
https://detroit.craigslist.org/wyn/cto/d/westland-rare-1984-riviera-ttype/6867042522.html
https://detroit.craigslist.org/wyn/cto/d/westland-rare-1984-riviera-ttype/6867042522.html