Spring relocation kit installed wrong?

1 3/4” exposed and almost 3” from the tail shaft. I looked through the documentation I got with the car and the driveshaft was shortened in 2016 to “measurements given by owner” the owner in question was the gentleman who I bought the car from who did the driveline conversion from /6 to 360/727 and 8 3/4 rear, hopefully someone can chime in and mention about how far it should be seated

Also in those documents I found an install instruction for the mopar spring relocation kit, and the instructions are foggy at best... I can see how someone going off their instructions could make the mistake of installing the shackle mount wrong, still not sure if this is the actual mopar kit, I’m still guessing home made

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Looks like the driveshaft is a inch too short