Best tire pressure for 69 dart with P245 60R14

Mattax said

Can't see the brand and style but 99.9% odds those are aluminum alloy - not magnesium alloy.
Magnesium quickly turns gray if not maintained and is big $$$.
Most important will be the correct bolt patter for your car, and back spacing that will work.
Check on the type of wheel nut it needs. I've been lucky in that all my used rims came with correct matching nuts - even the lefthand threads.

This is website has decent overview of the many of the early 'mags' both aluminum and magnesium. It will give you an idea of what was made in each.
Classic racing wheels

Crager SS and many others early classics were aluminum center with steel rims.

This company seperates the wheels (used) they sell by material.
AKH Vintage Wheels - Vintage Rally, Styled Steel, and Alloy Wheels

Click to expand...

The make on the wheels I posted before is Italmagnesio, made in Argentina in the 70's... and someone got that set in great shape and made it look like new. I have another set for the dart from the same manufacturer made in the 70's and I can tell they are very light in weight (at that time they called them magnesium so it must be an alloy).
Thanks for the links, in the US you have many great options at reasonable prices but, to make it worse, the darts assembled in Brazil in the 70's used an old bolt pattern from willys so the bolts are closer together just a bit than the pattern on the US darts... not sure why they did that but most certainly to differentiate from the ford maverick, which was made and sold here at the time (302 V8), still the left side has counterclockwise threads.
The rim wheels I posted have stamped in the back DART and were made right for that car so there are no issues as far as clearance, backspace, etc... unless the tire is too large.
Below is a pic of my car, been sleeping for almost 20 years and now will probably run once a week, after I finish spending the hours and $$$ necessary.
Thanks again, nice talking to you.