The orange box is meant for a stock engine and not good for revs over 5500rpm.Burnt up two before I found this out and switched to a chrome back in 1990 and still running it.
You assume to much by quoteing me and I also agree with what you said on RPM limits. Though I know a few people here that will argue with what you wrote.
The Orange box is sold as a performance item, not stock replacement.
I've been running a chrome box nearly as long.