Im lost at this stuff.... HELP?
How many different people have to tell you something before you believe it?
Lol I will give it a go.
I would leave the engine alone.
Get a good 3200ish converter.
3.73 gears and a sure-grip, pretty sure you have to change the carrier since you have 2.45 gears.
My .02 cents.
But....if you have to change the engine combo, the Voodoo cam, an air-gap, and a little more stall than stock would make this a fun car as well. Nothing like shifting out of first at 60mph or so! Lol. My Dart had a stock bottom end 72' 360, a crane 224/232@. 050,280/288 adv,. 460/. 450 cam, mild pocket porting on the stock j heads, ld340, and a 750dp, went 13.5@100 with 3.23 and wheelspin.