Slant 6 to 340 Engine Swap in 69' Dart

Good catch on the radiator outlet. I'm definitely going to be using an aluminum water pump.
Have not decided which aluminum intake to use yet. I'll have to check and see which work with the a/c brackets.
I'm also going to be using headers.
So, if I understand you correctly, I need a 340 specific power steering pump but I could use the same PS box (or I can get it rebuilt by Firm Feel to improve it).

Also, what is the factory correct engine color for the 1969 340's?
I have seen some painted orange and others painted turquoise.