Add to Cart Compare Quick view Crank Adapter LS to Older GM Converters 20pk (ALL26121-20) ALLSTAR PERFORMANCE MSRP: Now: $558.99 Was: Crank Adapter Sleeve - GM Converter to GM LS-Series Crank - Steel - Black Oxide - Set of 20 MSRP: Now: $558.99 Was: Add to Cart Compare Quick view