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This is a reproduction & excellent.
For Firebird TA's from 1970-81 .. and often used on 2nd gen auto Camaro's - so that unlike the black Camaro one.. on the Firebird you can see the PRDNSL ... the T-Shift arm has an alignment of gear position, although not "correct" for Camaro's.. but makes more sense.
Note that the 80-81 Firebird had PRDN21 on the lense.. if that is a requirement for you do not buy this.
Four screws (not included) hold down this black chrome edged shifter plate - which as shown... includes the PRDN21 indicator lens.