Pete, yes there are headpipes that are stock w/one by bottom curve or just after it on both sides. Can't remember which Cali or if it was an 1000. I'm thinking a 93 SP3 or Cali 1000. I have a set but they are on the Cal2 and it's up the road in my space. My EV has a X-over w/one bung, let me go look at headers.
OK, my 98EV has one on ea side in front of the area X-over slides on, they are marked Moto Guzzi T 295
Went back down again and Stock Cal2 single wall has them in same place but have way smaller threads. These ports may be for factory sniffers.