New rallye dash replacement gauges/tachs (some insider news from the supplier)

Update: The used tachometer mentioned in the OP has been sold. However, if you want a new one, see post #26 ^above^. He was quoted only a two week lead time. You'll want to call them to place an order, because their websites are the worst and often they show out-of-stock on things they actually have or are building, but you can't place an order online. Their phone service is usually excellent. The manufacturer is AMS Obsolete, but they have several different names that they sell various products under. Here is a link to one of them specific to the tachs: Mopar Restoration and Performance A-BODY DASH-RELATED, Tachometers