65 barracuda formula s tach

Very nice. I am not interested, but have a question. I know 66 Barracuda Tach had a separate tach conditioning unit, does a 65 use the same or is it self contained?

I am guessing you are referring to the sending unit. Yes it uses a sending unit mounted separate from the tach . However these have been known to cause trouble.

Here is a link to a new sending unit board

63- 66 Tach Sender Upgrade Board MSD Ignition - Premium Dash Decals by Mr.Heaterbox