Went digging into various boxes and cans and containers in search of my mia sending unit for the oil gauge on my 85.
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And here is what I found. All three of the double terminal sending units more or less match the existing harness in the engine bay. I say more or less but it is actually less because someone at some time in the past modified the wiring plug by cutting off one of the female contacts. Not sure why but conjecture that one or the other of the male ends was the external ground and whoever did the hack job didn't need it anymore. it is possible that they switched to one or the other of the single terminal versions of the sending unit. Personally I happen to like the one on the lower right of the picture. It is short and would likely screw right into the block port without any adaptors needed. What came out of the old motor was the large ell and one of the two terminal units. That was probably the OEM and the ell was used to shift the unit out of the way of the distributor. I can use either of the brass adaptor ells and the small ended senders.
Just wondering for the sake of knowing for sure, which of the combinations was what would have been found on the block to begin with? That aside I will be having to replace the terminal plug for the unit one way or another because what is left is so crippled that it will probably break during install. Think I have one hanging off another harness that I salvaged from a wreck so will have to go digging for that now.
On another note, still looking for a clutch arm return spring. The ones I have are either too long or too short. It needs to be around 6" +/- to possess sufficient tension when installed that the arm will return readily but not so short that the pedal becomes hard to push or the spring gets stretched and goes limp.
Nick