Senior

Welcome. I have a 65 Dart 273 that I am almost ready to start driving after ~3 years and bought a 64 Valiant slant six a few months ago. Most people go the other way - installing manual steering so that headers will work with a V-8. Thus, you can get power steering parts easy and cheap. I have extras in my shed.

If you haven't switched to electronic ignition yet, that is easy and a big bang for a small buck and will improve mileage and make starting easier. Many suggest the GM HEI, as I did. SlantSixDan has a post with photos on installing the 4-pin type. I used the 8-pin type in my Valiant. Also, check out www.slantsix.org.