I can’t tell the difference either...

This Beetle definitely did not have a stock engine, as it had a single exhaust on the left side (you can make it out in the wheel detail pic), and the little exhause cutouts were unoccupied. I wanted to stay and ask the owner what was in there instead, but alas, no time as I had to get back to the office.

Sorry for the shit pics. Again, I was in a hurry and only noticed the Porsche wheels at the last moment.