46rh questions

Along the lines of the OPs post
What's the thoughts on the sonnax replacement killer OD spring? I bought one for this job as I had been dibbling and dabbling buying a few upgrade pieces while I was waiting to get the money for the kit and fresh converter, that was one of the first parts I bought for this job. I really didn't see anything wrong with the old one but that one does have 314k on it.... In the press it didn't feel like it took anymore "oomph" to compress it to get the snap rings in or anything.....
Is the aftermarket part really an "upgrade" in this case?
Once I got it into pieces I was glad that I bought the Torrington bearing for it... Old ones were intact but definitely felt "wore out".