Tobias Killer B bridge- Looking for Hipshot

[Agito]

I don't know the string spacing in my Tobias Killer B 4 String, How can i measure it?
It's a 97 bass, And i'm looking for a Hipshot or any other good bridge for the Tobias
Any recommendations will be great

And how hard is to replace a bridge? I know the neck tension will be much loose, But if i put the strings on it will be back on track right?

And if i am already opening a thread, How can i setup a neck?

Three question, One thread :P
Thanks TB.

[Agito]

Oh and another thing, I have a Kahler 7410, Will it kill the bass if i'll install it?