Stock Shackle Length?

[Mich88XJ]

Hi, I'm trying to figure out what type of lift a previous owner did in the rear. I believe it was a shackle lift, but I don't know the stock length of a shackle, anyone care to enlighten me?

[XJJPR]

3 3/4" approx. center hole to center hole

mark
orgs mfg