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Disclaimer: Interior configurations may not be correct. Example photos are for seat type/color/material only.
Bench seat unless otherwise noted
701 ~ Black Roma Cloth, Black Coated Fabric (bench) ~ (13437-69)
702 ~ Black Coated Fabric (bench) ~ (13236)
703 ~ Black Coated Fabric, Black Coated Fabric (bucket) ~ (13436-46-80)
704 ~ Black Randel Cloth, Black Coated Fabric (bench) ~ (13637-39-69)
705 ~ Black Elk Coated Fabric, Black Coated Fabric (bench)
~ (13637-39-46-67-69-80) ~ (13836-45)
706 ~ Black Elk Coated Fabric (bucket) ~ (13637-67-80)
712 ~ Light Sandalwood Coated Fabric, Antique Light Sandalwood Coated Fabric ~ (13236)
713 ~ Light Sandalwood Coated Fabric, Antique Light Sandalwood Coated Fabric (bench) ~ (13436-45-80)
714 ~ Antique Light Sandalwood Coated Fabric (bench) ~ (13636-37-39-46-47-67-69-80) ~ (13836-46)
715 ~ Antique Light Sandalwood Coated Fabric, Antique Light Sandalwood Coated Fabric (bucket) ~ (13637-67-80)
718 ~ Light Sandalwood Rondel Cloth, Antique Light Sandalwood Coated Fabric (bench) ~ (13637-39-69)
719 ~ Med. Saddle Coated Fabric, Antique Med. Saddle Coated Fabric ~ (13236)
720 ~ Med. Saddle Coated Fabric, Antique Med. Saddle Coated Fabric (bench) ~ (13436)
721 ~ Antique Dark Saddle Elk Coated Fabric (bench) ~ (13636-37-46-67-69-80)
722 ~ Antique Dark Saddle Elk Coated Fabric (bucket) ~ (13637-67-80)
724 ~ Dark Blue Roma Cloth, Dark Blue Coated Fabric (bench) ~ (13437-69)
725 ~ Dark Blue Rondel Cloth, Dark Blue Coated Fabric (bench) ~ (13637-39-69)
726 ~ Dark Blue Elk Coated Fabric, Dark Blue Coated Fabric (bench) ~ (13636-37-39-46-67-69-80) ~ (13836-46)
730 ~ Dark Jade Rondel Cloth, Antique Dark Jade Coated Fabric (bench) ~ (13637-39-69)
731 ~ Antique Dark Jade Elk Coated Fabric, Antique Dark Jade Coated Fabric (bench) ~ (13636-37-39-46-67-80) ~ (13836-46)
732 ~ Antique Dark Jade Elk Coated Fabric, Antique Dark Jade Coated Fabric (bucket) ~ (13637-67-80)
736 ~ Dark Jade Roma Cloth, Antique Dark Jade Coated Fabric (bench) ~ (13437-39)

Source: Trim Combination Chart, Chevrolet P&A Catalog, 1972 Revision 30A. Note the trim chart does NOT specify which are bench seat and which are bucket seat codes, only the model(s) the trim was available with. There were only five (5) codes for bucket seats; 703, 706, 715, 722, and 732. All others are bench seat configurations. Note too that no bench vs. bucket seat designation was used on any plant's trim tags.

The interior codes shown below are for Monte Carlo only.

Bench seat unless otherwise noted
707 ~ Black Rapallo Cloth
708 ~ Black Rapallo Cloth (bucket)
709 ~ Black Elk Coated Fabric
710 ~ Black Elk Coated Fabric (bucket)
716 ~ Light Sandalwood Rapallo Fabric
717 ~ Unlisted but documented via trim tag
729 ~ Dark Jade Coated Fabric, Antique Dark Jade Coated Fabric (bucket)
733 ~ Dark Jade Rapallo Cloth
734 ~ Dark Jade Rapallo Cloth
735 ~ Antique Dark Jade Elk Coated Fabric, Antique Dark Jade Coated Fabric

Source: Trim Combination Chart, Chevrolet P&A Catalog, August 1972 Revision 30A. Note the trim chart does NOT specify which are bench seat and which are bucket seat codes, only the model(s) the trim was available with. Where seat type is known it will be noted in parenthesis after the seat code and material type.