341 hemi in 1970 dart

Nope. Vertically, the 392 is approximately 10.5" tall, whereas the 331/354 is about 10.25" tall. Only .25" difference. But the deck height difference is from the crank to the heads - at an angle. That puts the heads taller and wider. It is the width that hurts you. the width of the 354 at the bottom of the heads is 18.5", whereas the width of the 392 at the bottom of the heads is 19 3/16". That is almost 1/2" of extra width on each side that you have to deal with. I'm not saying that the 354 is easy to fit, but it is easier than the 392.

I'm not sure what steering issue you are having. Could you elaborate? You need to use a 392 front sump oil pan no matter which motor you choose.