Chuck,
I think it was you and I talking at SCR7 under the hood of my Deuce regarding the temp sending unit. The deuces have the two wire sending unit on the left head, not the right, but I believe it's the same unit. One wire for the warning light, the other for the TCS system.
This was probably the first difference we found between the Z28 vs. the Yenko applications for the CTB/CTC engines. We believe the reason is due to the wire harness of the different bodies, as the Nova SB V8 harness always has the temp wire on the left side fender well.
This 6k engine is excellent reference material! It has answered a lot of questions, and created new ones.