I fitted a Badass 2 to my my Squier Jazz and a set of Wizard pickups.
Both upgrades were well worth the money. The bridge was a direct replacement, no routing and all existing screw holes lined up. I don't know if that can be said for the Gotoh, but I'm sure someone else will be along to tell you.
The pickup wasn't so easy, but that was down to my lack of experience with a soldering iron. Once I had practised a bit and got some advice on this forum, all was fine.
Andy at Wizard is very helpful and patient. They have a website, but I don't know how to the do the link thing, sorry.
Gary