I was given a set of Crow 3" five point harnesses for my birthday about 5 years ago to install in my buggy but 3" belts were a little too wide to replace the 2" wide Simpson belts that were already in the buggy. So these belts have been in my closet sitting in boxes for the past five years just waiting for the "perfect" project!
Right now my idea is to just use the 3" lap belts for the rear seat but I have in the back of my mind to add a bar to mount the shoulder harnesses but the bar would have to be removable. At this point I'm undecided what I will do with the harnesses but the 3" lap belts will work out great.