Well actually it isn't "3.0" but just "3" the marking looks like this:fedezyl wrote:Pietere, D and S means Distra and Sinistra, left and right in italian..i'm guessing the 3.0 means the engine size..
I scanned the engine for 3 hours and these were the only markings that I came across. Ok, even if this could be 3.0 liter, why would the previous owner keep the 2.5 plenum and valve covers? Why would he somewhat remove the marking on the block? It's turning more into a detective story...