Alright I have a 99 rcsb with a 4.8. I need a new/used abs booster controller(under the drivers side door) They have a 2000 and a 2001 silverado or sierra at the junk yard are the controllers interchangeable? Or will they need to be reflashed or what/

Also what trucks or our magnitude hade bigger disc front and rear, I want to do an upgrade but have to think I can find/build a kit better then 400oo.

I am under the impression that all 99-02 sierra/silverados are interchangeable so am I correct?

Do i need the computer from a 5.3 to change to that engine from a 4.8? and do I need the 6.0 computer if I go that route?

Thanks guys,
Mike