If you spoke to Arbil dont bother. Try Devon 4x4 they are much more on the ball with ARB stuff. Been very helpful recently with my hilux bar.
If i remember the post 02 bar is a more collapsible version and does come with recovery points in it. About that time legislations changed to ensure...
Google would be your friend there
Its no small job but is possible nobody here has done the work so id say you need to do alot of research and please post back and do a build thread to help.other in future.
Youd be better iff buying a 80 running gear and a 100 body and making that work.