That's the combo my car (71 Challenger GA4) was done in 30 years ago. Worked well.
Only difference was we did the jams in single stage too.
Where did you do the cross over...under the weather strip or at the doors
At the doors.
GA4 is a metallic and my painter had no issues in using the 2 different types of paint. It was all done based on his recommendations and experience.
It was all PPG product and it was a long time ago. I know the technology and environental requirements of auto paint have changed formulations considerably since then.
