My 84 has 3.5 in the corners and 4x10s in the rear. Im not sure but you might be able to cut the center 4x10 opening for a 6x9. But I don't know if that would help or hurt the sound setup in the dash.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73
1992 Camaro RS 305 TBI
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