Change 1-2 gears to lower ration gears 1967 Dart Automatic (904?)

Etor
The 1972-318 should still be the 9.5Scr rated engine, And that,in an A-body with 3.93s and not tubbed should already be spinning tires.
So, seeing as you are in Switzerland, and TCs are I imagine are non-refundable if you are not happy with it; I think the smartest thing for me to do is repeat what I earlier said; call the supplier.He will ask you a few questions about your combo, and get you the right TC the first time.
If you lived next door, I'd loan you my 2800.............................
Here's a trick to help you choose between the 2500 and the 3000.
Drive your car in first gear up to about 95% of your desired stall and gas it hard. Watch what the tach indicates. You want it to flash up to the desired stall rpm or a tiny bit more. 95% of 2500 is 2375. Of 3000 is 2850. If it doesn't flash to the proper desired rpm, adjust your MPH, until it does.
Then decide which blast-off you like better.

Here's the deal tho; the 318 has a pretty flat torque curve between 2500 and 3000. Imagine it makes 200ftlbs all the way. At 2500 this is 95hp. at 3000 this is 114. So that's 19hp between the marks.
If your 72 is the Hi-Compression model, imagine it makes 250ftlbs, then the numbers are 119 and 143hp; this is now a 24hp difference. These are maximums at WOT. You can of course get your 318 to deliver less than the maximum by not flooring it.lol.
At 65mph, your rpm might be about 3300, so either TC will be fine. It looks like a city car, so if I had only the two choices of 2500 and 3000 I would choose 3000,lol. but I really liked the 2800 with the 4bbl-low-C teener and about the same starter gear that you have.I'm at 3650 car and driver