I have an a/t in my Barracuda and a 4 speed in my Swinger.
The Barracuda has a mildly built 5.9 with a 221/229 .540 lift cam , IMM EQ ported heads and 2.76 gears . I enjoy the auto in it . It’s pretty much my daily driver .
I will drive it anywhere so the 46rh with 3.55s will give me better off the line excelleratiin and the ability to cruise at 80 on the freeway whiteout turning 3200 rpm and some asshole tailgating me .
The Dart has a 408 W2 solid 246/250 .648 roller and it’s more of a fun/race car . Although it has yet to see the track . It’s fun to roll through the gears once in a while ! Plus I love the look of a stick shift popping up from the floor !