Mike thanks for your comment. Absolutely true, there are a number of gurney bubbles available in the U.K. and e.g. Frank's is done in an absolutely superbe manner.
I am just checking out to get the "tear drop" form. Together with the stainless stell screws it fits into the look of the headlight covers and the sidewindows, which I like so much.
As with Vic I will propably need some beers to cut the hole into the roof, but the real challenge is the exchange of the pedal box to gain some more leg room as well as to separate the pedals so I am not pushing all three pedals at once with one feet....Frank is already in the loup and I will let you know the solutions...