i got 3 point and welded a tab on the bar in the back near where the seat snaps in. the other 2 points just use the stock locations. It works pretty good but you still get a bit of side to side slip since there is nothing to keep the center strap lined up with the stock seats.
u can use the harness bar from UTV crap.com comes already finished (no need to paint)
bolts in in place of the stock cross bar and has hoops to hold the harness in place then pick some good 4 points and bolt them in, it's a nice setup if you are going to stay with the stock cage.