4:88 from runner to pickup

I have a chance to buy a set of front and rear 4:88's from a 92 runner. I'm putting a set of 33's on my 94 pickup 3.0 litre 5-speed. I just want to make sure they will fit before I buy them. Can you guys confirm that for me or is there more I need to know. Also how big a job is it to swap. They are complete not just gear sets. Thk's for any help you can give me.