When I was racing a box stock Slant Duster I tried swapping ignition boxes at the track. I tested a brand new orange box against a new chrome box and my tried and true stock box from NAPA. The orange box ran the same as a stock box, and the chrome box slowed the car down. No one could tell my why.
How's that for useless trivia?
I've run quality parts store boxes for years w/o a problem Also the orange mopar box that came with the conversion kit's ~30 years back. Still working fine. mst of this applies to street driven 7 limited track use at ~ 6K rpm limits.
I also have a couple of Chrome boxes in the ignition stash pile that are likely from the late 70's. Have to get them out and test them. No names on them as I recall, I think one has a red H/sink the other a blue
