Thanks all.
Black alu(?)says: Ford 16V Zetec on top.
Car came with a series of photos on a CD incl. the "umbau" on the exhaust system from the bloc to the tailpipe. The K&N Typhoon was added by the same garage a little later and as far as I can see that was the extent of it. Thanks again for all your friendly input.
Last question...I popped open the plywood cover behind the seats. I see a jack, a crank a hammer. Other cavities in the foam plastic are empty. Were these originally for tools, first aid kit and perhaps spare oil? Previous owner never went there...thx
cole