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Part # 898-53BLIs that not the same part, just for the Blazer/Jimmy?
All of those patch panels are listed as: Truck, Blazer & Suburban. You are correct, the bottom angle will be slightly steeper for the short bed truck, Blazer, ect., compared to the long bed & Suburban, however it should not be a problem...it will just "roll under" & you can cut it off flush with the existing portion of the panel. Lorne