Try Mid America. That is where I got mine for my 86.
I have a 1990 corvette in need of a tachometer filter. I've checked
> with Chevrolet, ecklers, and a score of other after market parts
> dealers, .but none are available.
>
> Are the engineering specs for that particular part available anywhere?
> In other words, what is the value of the filter capacitor (Voltage and > MFDs).
>
>
> TIA