Found this on E-bay, yesterday, and bought it. I have had a few of these driving computers, and like them. However this unit also has cruise control. Just couldn't resist.
https://www.ebay.com/itm/125095958785

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170

Interested to know how that cruise control works out on road trips. I assume it is all electric servo? I have a different brand, new in box, from 1980 that I never installed yet.

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"Louise", a 1976 Dart Custom project, (now sadly reverted to being just an "organ donor" to our other project Darts.)

Pretty sure it is a vacuum servo

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170

I recall seeing one of that model in the ebay ad installed in an acquaintance's car. Can't remember what model it was.

I had a '73 Fury 2dr as a daily driver for 5 years. I bought it from the original owner in the early 80's. He had a Sears installed Cruise control on it. That one actually had magnets taped around the driveshaft! He claimed that he was told that one was the first one that Sears ever installed. Hokey as it was, it never failed me during my ownership.

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1982 Dodge D150 ( Ram)
225 with A833OD. 2bbl. Non power brakes