Here is a used RCD 40 tooth, 14MMGT hard anodized blower pulley 3.5" width. This has GT tooth profile (for flat tooth tip belts), must run with 14mm GT belts.
14mmGT 28 tooth 3/4" offset Supercharger Pulley drag boat dragster
14mmGT 38 tooth Supercharger Blower Pulley drag boat dragster
14mmGT 41 tooth Supercharger Blower Pulley drag boat dragster
14mmGT 37 tooth Supercharger Blower Pulley drag boat dragster
14mmGT 31 tooth Supercharger Blower Pulley drag boat dragster
Jones PS-6106-B-40, One Black Aluminum P/S Pulley Htd 40 Tooth 1In Wide Press Fi