Well, the good news is that they are def both 5-speed G5’s. Both say G5 in the vin, and both have five gears. The brown 1975 has a cast iron head. The bad news is, not only is the 75 missing the carb, but also a chunk of the intake. I don’t know how or when it broke off, or where the chunk went. There should still be enough protruding to get a good seal, I hope!
It appears to be an old break, because you can see where the PO used red RTV. There’s remnants of it on the broken surface.
The green 1978 has a complete engine, but it’s missing the speedo/key switch cluster, headlight, and taillight. Problem is, it’s an aluminum cylinder, and it’s seized. There was no spark plug in it, and the rings rusted to the cylinder walls. I’ve got a little Evaporust in it right now to try to loosen it up a bit. I’ll let that soak overnight, and fill it with Coke tomorrow. Maybe I can get it freed up. If not, I need a cylinder.
Is the aluminum cylinder sleeved or Nikasil plated?