Re: Non AC Dash Vent Location
You may want to look at both Vintage Air and Classic Auto Air and see what kind of vents they offer for your application. I am pretty sure you have to have the vent assembly on hand because you have to trim a little at a time until it fits your dash.
You can also download the instructions for both system on their respective web sites. That should give you a better idea.
1969 Chevelle SS, zz454HO, Sniper EFI, Bowtie 200r4, 9" with 4.11's (money pit).
2018 Toyota Tundra Limited Crew Max (DD and dog hauler)
2012 BMW 128i convertible (wife's)