Need help Layin frame on a 1991 Caprice Wagon

Need Help layin frame on my wagon. Need to build a 4 link but the only 4 link that will work (I THINK NOT SURE) is a reverse 4 link. Can anyone help???

Take a good look at the '62 '62 Cadillacs, they have a pretty efficient 4-link to keep room for seating.

Thanks for the help I will do that