gibson sg with bigsby

Can you put bigsby on a Gibson SG?
I mean if it’s not made with it on there, like if you get one without it on there can you put it on? I’m getting a Gibson SG this week from a friend of my dads for very cheap but it doesn’t have a bigsby I was wondering if you can put one on or does it have to be specially made to have one.
Bigsby tremolos can be installed on an SG. But have a pro do it. It has to be aligned just right.
Bigsby B5/ Vibramate V5/ Roller Bridge on Gibson SG (Part 1 of 2)