341 hemi in 1970 dart
If you weren't so far away, I have a 392 and/or a 331 I would sell you.
I put a 392 hemi into my '68 Barracuda when I was 16. It worked well except for the left rear exhaust was very compromised by the location of the steering shaft. A smaller hemi like a 354 or Dodge 315 hemi would fit a lot better. I pulled the motor out 20 years later and put it into a '56 Plymouth instead.
I will be putting a 331 hemi stroked to 378 in my '70 Satellite with aluminum heads to lighten it up. The last picture is the current state of my 392.