please ignore this my computer is stuffing up

hi all,
just wondering if we could have a few options for diffs to suit 1200 ute. i know there are kits out there but i want to keep things cheapish as i dont have much power and small amount of money to spend.

i have been told you can use blue bird diffs but i want to know about set ups and info on what people have done and how hard it is.

also info on the U bolt plates on top of the rear axle. are these welded on or just sit there once the u bolts are tightened. as im currently missing one.

i know this has probably been covered heaps before but im new to the site. please forgive me :) thankyou all in advance.

im keen for a 5 speed if anyone has one can you message memessage me : )