is… 147kW (200CV)
9 documents provided by manufacturer regarding the CORRECT GTV/Spider V6 TB power, both Phase 1 and Phase 2. All state 147kW (200CV) not 148 not 149. It does not matter if You found a journalist or a register that provides other information. MANUFACTURER states 147kW. See brochures, owner’s manual, workshop manual, press kit.
Also on Wikipedia the entry, edited by me, states 147kW, so untill a hard evidence is provided this value will not be changed.