don't need the harness bar....from there are you going with a true 5 point, true 4 point, or a 3 point (the shoulder harnesses make a y behind the seat and bolt at one spot?
ok, from here i'm guessing, but i have been told there are bolts between the rear seat back and bottom. I looked the other day, and found some child seat clips, there are probably bolts that hold those down, so you can just bolt the shoulder harness down there, and then the lap belts where the original 3 point lap belt hooks up.
As for the sterilizer (5 point) i don't have a clue where that goes....probably put in your own bolt?
I too am interested in a 5 point and wonder what other people have done......
hope this helps