This driver side moulding is correct for convertible. On convertibles the top portion is trimmed to allow it to slide under the sun visor bracket. The engineering number imprinted on the back is D1ZB-6503599 for 1971-1972 and D3ZB-6503599 for 1973. Convertibles show the same casting numbers on the part, but are a modified before assembly. We do have factory cut convertible mouldings both early and late.
Ford part # D1ZZ-7603599, D1ZB-6503599-aw, D3ZZ-7603599, D3ZB-6503599-aw
*NOTE* Excludes Mustang Fastback and Mach 1 models.