So my budget is about $6k lol, I still have the standard 3k and my diff is screwed(makes a bad whining sound) what would be involved in putting a worked 5k in it?(will it need a bunch of changes to wiring etc?) I would want to change the gearbox to a 5dp and will need a new diff, how much approx for parts? And what parts will I need(what gearbox, what diff anything else I will need to upgrade or change?). What sort of power can you expect from a decent 5k?