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Disclaimer: Interior configurations may not be correct. Example photos are for seat type/color/material only. In 1972 Chevelles, the interior trim number no longer identified bench vs. bucket seat type. Bucket seat models were identified on the trim tag with A51 and bench seat models were identified on the trim tag with A52.
Seat Type Generally Noted On Trim Tag
A51=Front Bucket Seats ~ A52 (or none)=Front Bench Seat
701 ~ Black Pinta CTO/Coated Fabric (13436-37-46-69-80)
702 ~ Black Royal Cloth, Black Coated Fabric (13437-69)
703 ~ Black Rianon Cloth, Black Coated Fabric (13637-39-69)
704 ~ Black Elk CTO/Coated Fabric (13637-39-69-36-46-67-80 ~ 13836-46)
705 ~ Black Pinta CTO/Coated Fabric (13236)
710 ~ Antique Dark Green Pinta Coated Fabric, Antique Dark Green Coated Fabric (13436-37-46)
711 ~ Dark Green Royal Cloth, Antique Dark Green Coated Fabric (13437-69)
713 ~ Antique Dark Green Elk Coated Fabric, Antique Dark Green Coated/CTO Fabric
(13636-37-39-46-67-69 ~ 13836-46)
719 ~ Antique Medium Tan Pinta Coated Fabric, Antique Medium Tan Coated Fabric (13436-37-46-69-80)
720 ~ Antique Medium Tan Coated Fabric (13636-67-46-67-69-80 ~ 13836-46)
721 ~ Medium Tan Pinta Coated Fabric, Antique Medium Tan Coated Fabric (13226)
723 ~ Dark Blue Royal Cloth, Antique Dark Blue Coated Fabric (13437-69)
724 ~ Dark Blue Rianon Cloth, Dark Blue Coated Fabric (13437-69)[1]
730 ~ Light Covert Rianon Cloth, Antique Light Covert Coated Fabric (13637-39-69)
732 ~ Antique Light Covert Elk Coated Fabric  (13637-39-69-80)
743 ~ White Elk Coated Fabric (13637-39-67)

Notes:

[1] The 724 trim code appears only for the 13437/39/69 models according to a GM Trim Combination Chart.  However, a verified body tag of a 13637 series Chevelle built in Los Angeles shows the same code.

Those interior codes shown below are for Monte Carlo only.

Bench seat unless otherwise noted
706 ~ Black Rapallo Cloth, Black Coated Fabric
708 ~ Black Elk CTO/Coated Fabric
715 ~ Dark Green Rapallo Cloth, Antique Dark Green Coated Fabric
717 ~ Antique Dark Green Elk Coated Fabric, Antique Dark Green Coated/CTO Fabric
725 ~ Dark Blue Rapallo Cloth, Antique Dark Blue Coated Fabric
731 ~ Light Covert Rapallo Cloth, Antique Light Covert Coated Fabric
734 ~ Antique Light Covert Elk Coated Fabric
735 ~ Antique Dark Saddle Elk Coated Fabric
740 ~ Medium Pewter Rapallo Cloth, Antique Medium Pewter Coated Fabric