I just got a Bigsby put on my SG standard, and I love it. I wanted to get one put on my 137, but i was wondering if its worth changing parts on a custom shop Gibson. I'm not sure exactly what kind of Bigsby I would need for the big body, but is it worth changing?
It will really bring down the resale value so only do that if you plan on keeping it for a long time.
The only person who cna say if it's worth it is you. Do you really need another Bigsby? Also, if you don't care about resale value, it's entirely down to you. I think that's quite a common mod but I have no idea how much it would affect the value.