Hurst Competition/Plus 4-Speed Installation Kit - GM. HUU-3733163 Hurst Competition/Plus 4-Speed Installation Kit - GM. Hurst Shifter Reliability. This Hurst Competition/Plus installation kit will fit various GM vehicles when using a 1963-1968 Muncie (451) transmission, and contains everything needed (shifter not included) to install your Competition/Plus shifter.
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