as far as i'm aware fulvia's didnt come with ffs, probably a britax would be period however with such a flat roof most "fairly modern" sunroofs would fit, i remember taking a sunroof out of a maestro and fitting it into a mk2 fiesta a few years ago with no problems whatsoever, if i were you i'd just take a trip to a local breakers yard and look for a 1980's 1990's car fitted with an after market sunroof, most modern cars with sunroofs now have an inner roof skin aswell for tilt and slide or atleast with drains on them so would be little use, hope this helps james
Quite a selection on ebay to give you an idea what you might find.
Just enter glass sunroof in search
Brian
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