727 in a 1966 dart wagon! HELP

It's my understanding that the late 80s lock-ups were 2.74-1.54-1.00 ratios. This is normally a Lo-Po ratio, in that the rpm drops between gears are pretty severe; well suited to their intended useage.
But not for a screamer engine.
However, in an early lightweight A, this could be an advantage with the right cam.
Adapting that A999 to non-electric shift is no big deal. And
the A999 has Heavy-Duty parts already in it And
Modest hi-stalls are available, lol, if you really need it.Remember the 2.74 low is 11.8% stronger out of the gate or about 1 rear gear ratio, making 2.94s feel like 3.29s,and 3.23s like 3.61s, etc.
And it weighs about 9000 pounds less than the 727,lol
For me this would be the go-to choice

Got pics of that wagon?