if it is definately a fiat engine then it will be from the tipo or coupe, but a 2.0 16v is more likely to be french. the ulysse is a eurovan that uses the same engine as the synergie, 806 and zeta (or c8, 807 and phedra for the later version).
the 2.0 8v was replaced by the 130bhp 2.0 16v at July 2000 so if the engine is from 2000 or later it is a french EW10 engine.
if it is older than 2000 then it is an italian, either the 146bhp 160A8.046 (tipo sedicivalvole) or the 139bhp 836A3.000 (coupe and tipo sport)