Four speed hump installation

I never saw a 65 factory 4 speed A-Body that didn't have the "Shift Pattern" plate... however 64 cars with 4 speed did not have the Shift Pattern Plate... they had the Chromed Round Ring !!! So if the tunnel has a round hole for the shifter and has the Bracket (for the Shift Pattern Plate).. it's a 65 Tunnel !!! If it does not have the Bracket... it's a 64 tunnel !!! Note: 66 and later had the larger oval hole ...
And 64 / 65 used the Same Round Shifter Boot held to the tunnel with 6 sheet metal screws...
My Two ¢