[GMC85HighSierra]

If I were you, I would use the 88 tub. Although I've never owned a suburban, I prefer barn doors over tailgate. I would convert the 88 tub into the 73 tub. If you do that, you'd need to fill in the holes in the cowl from the 80s hood, and then convert the dash to have the wiper in the dash, rather than the column. Thanks