I tried to find some information on "German" roll bars for Morgans but in the article on the Morgan Continental Championships they didn't mention the supplier but the prices:
Roll bar, EASY to fit and to remove, 350 DM = 175 Euro = 120 GBP.
That was 1993. Fitiing 280 DM = 140 Euro = 100 GBP.
Between 1993 and 2007 something went terribly wrong...